| 单词 | pencil lead |
| 例句 | The black blocks were graphite, the mineral used to make pencil leads. Bomb 2012-01-01T00:00:00Z She breathed in deep and, despite the unfamiliar clothes, could still smell her mother’s scent, shea butter lotion and a hint of pencil lead. Ivy Aberdeen’s Letter to the World 2018-03-06T00:00:00Z “Excuse me, you say to bring only one pencil, but what if the pencil lead breaks? Will there be a pencil sharpener?” The Mysterious Benedict Society 2008-04-01T00:00:00Z A small hole, blackened as if with pencil lead, pitted the center of my right palm. The Bell Jar 1963-01-14T00:00:00Z I bear down so hard, my pencil lead breaks. Rules 2006-01-01T00:00:00Z We wrote on soap wrappers and toilet paper, and hid the pencil lead in our kinked hair. Free at last... and they all owe?their lives to Amnesty 2011-04-02T23:11:34Z It was delicious, tasting lightly of fruit and pencil lead, but lacking intensity. A 150-Year-Old Wine and Its Descendants Reveal Their Secrets 2018-06-07T04:00:00Z The wine offers black currant flavors and a graphite minerality that wine fiends tend to call “pencil lead” or “pencil shavings.” These 5 great kosher wines are perfect for your Passover table, or anytime 2018-03-16T04:00:00Z I stared at the note; it looked as if the pencil lead had splintered at the end of the word ‘ordinarily.’ Why Did an Accomplished Writer Fall Silent for Two Decades? 2020-02-25T05:00:00Z Then, using an oversize hypodermic needle, she inserts a tiny electronic tag, not much bigger than a short length of pencil lead, that will allow them to identify the snake if it is recaptured. An unlikely wildlife haven on controversial Guantanamo Bay 2017-07-10T04:00:00Z I imagine that a core sample taken from one of these painted walls — a little cylinder the width of mechanical pencil lead, say — could be analyzed like tree rings. You Know What London Looks Like. But Have You Really Heard It? 2018-08-29T04:00:00Z Eventually, they degrade into microplastic particles, which by definition measure less than 5 millimeters, the approximate size of a pencil lead. Experiment shows biological interactions of microplastics in watery environment 2023-11-06T05:00:00Z Ordinary pencil lead holds extraordinary properties when shaved down to layers as thin as an atom. From a five-layer graphene sandwich, a rare electronic state emerges 2023-10-18T04:00:00Z About the length of a paperclip but skinny as pencil lead, it’s translucent and sinuous like a jellyfish tentacle. A new millipede species is crawling under LA. It’s blind, glassy and has 486 legs 2023-07-26T04:00:00Z With the width of a thin mechanical pencil lead and the length of a sewing pin, it’s easy to see how this tiny, thread-like snippet of an invertebrate has gone unnoticed — until now. Meet the 486-legged creature found in an L.A. area park 2023-07-13T04:00:00Z Graphene takes advantage of carbon's tight and strong bonds, as evidenced in how it behaves in diamond, yet comes in membrane-like sheets, as carbon behaves in pencil lead. Listen to what a single bacterium sounds like 2022-04-19T04:00:00Z “I’d be hungry before the bell rang at lunchtime. I was so hungry that I would eat my pencils, the pencil lead, the graphite,” on the way to school, she said. Saving a lasting reminder of Mexican American school segregation 2022-02-03T05:00:00Z The DEA says a deadly dose of fentanyl is small enough to fit on the size of a pencil lead. Louisiana coroner warns marijuana could soon be laced with deadly fentanyl 2021-11-04T04:00:00Z In the universe of office supplies, pencil lead — a mixture of graphite and clay, which does not include any lead — appears unexceptional beyond its ability to draw dark lines. A Physics Magic Trick: Take 2 Sheets of Carbon and Twist 2019-10-30T04:00:00Z Conté painstakingly developed a way to make pencil leads from a mix of clay with low-grade powdered continental graphite. Have we all underrated the humble pencil? 2019-06-25T04:00:00Z Pure carbon comprises both pencil lead and diamond, one of the weakest and strongest materials respectively — which goes to show that the arrangement of the atoms determines material strength. Listen to what a single bacterium sounds like 2022-04-19T04:00:00Z “A piece of that bullet, about the size of a pencil lead, sliced my spinal cord,” Osborne said. Deputy nearly killed in shooting says he has ‘blessed’ life 2019-06-08T04:00:00Z The song’s central lyrical structure, a series of wistful, utopian scenarios, was inspired by Ono’s poetry collection Grapefruit, which featured lines like: “Imagine your head filled with pencil leads / Imagine one of them broken.” Yoko Ono releases new version of John Lennon's Imagine 2018-10-10T04:00:00Z The key ingredient in retardant is ammonium phosphate, which produces nonflammable carbon — think of a diamond or pencil lead — when it chemically reacts with plant cellulose, Mr. Matousek said. California Today: Reporting on Wildfires Felt ‘Like a Country at War’ 2017-10-17T04:00:00Z Near the point, a brass thumbscrew adjusts the pencil lead or ink cartridge; otherwise, the tool is an uninterrupted rod of sandblasted aluminum. The New Status Symbol? Think Ink 2016-12-15T05:00:00Z Guided by MRI, doctors thread a laser catheter about the size of a pencil lead through a small opening in the skull and into the center of a tumor. In Need of Brain Breakthroughs 2016-09-12T04:00:00Z The ghostly pale creature waved her sharp claws but was unable to pinch Professor Davie Ashley as he used a syringe to place the transponder device the size of a pencil lead into her body. Researchers catch elusive crustacean inside Missouri cave 2016-05-27T04:00:00Z Your sinuses open off your nasal cavity like rooms off a hallway, with doorways no wider than a pencil lead. Smart Sinus Care: From Prevention to Treatment 2016-02-04T05:00:00Z The excavation unearthed everything from pencil lead to discarded earrings and hair barrettes. Sifting through the past 2015-10-11T04:00:00Z “Then she goes in with a huge needle, like the size of a pencil lead—nothing comes out.” Why Did the Chicken Make You Sick? 2015-01-26T05:00:00Z His sharp words, like the broken piece of pencil lead, will always stay with me. For people with disabilities, doctors are not always healers For now, the only option is to drill small burr-holes through the skull and to insert long, thin electrodes—like pencil leads—until they reach their destinations deep inside the brain. The Quest for a Better Brain 2014-03-17T09:32:18Z “They are as sharp as a pencil lead,” says Cameron Hudson of the University of Guelph in Ontario, Canada, adding that the frogs “do try to stab you a bit when you pick them up”. Top Ten Strangest Animal Moments of 2013 2013-12-26T16:45:03.961Z To see a dramatic and mind-bending example of how light behaves like a wave, all you need is three pieces of mechanical pencil lead, a laser pointer and a dark room. Double-Slit Science: How Light Can Be Both a Particle and a Wave 2013-12-12T15:15:00.372Z You get bubbles forming on the pencil lead - hydrogen on one pencil and oxygen on the other. Why do people hate the word 'chemicals'? 2013-11-27T01:47:08Z The tiny bones, each about the thickness of pencil lead, were first spotted three years ago by a local caretaker in the outwash from a steep hillside near a well-known fossil site outside Kunming, China. Dinosaur Embryos Point to Rapid Growth 2013-04-11T01:49:56Z To produce their "pencil lead" the team compressed a powder made up of the carbon nanotubes until it formed a solid substance. Pencil 'draws' sensors onto paper 2012-10-10T14:26:33Z I used so much pencil lead I could have drawn a line down the Great Wall. Ann Beattie: Mrs. Nixon joins the final photograph. 2011-09-12T04:00:00Z When you get everything right, you should see a distinct pattern of dots appear on the wall behind the pencil lead. Double-Slit Science: How Light Can Be Both a Particle and a Wave 2013-12-12T15:15:00.372Z Staples, pencil lead, and paperclips were the most common objects, often inserted into the arm. Doctors call embedding a severe type of self-harm 2011-05-10T15:36:43Z Some scientists say we can't even imagine what kinds of products might be possible with the substance, which hides in ordinary pencil lead and first was extracted using a piece of Scotch tape. Nobel Prize honors super-strong, super-thin carbon 2010-10-06T00:48:00Z Freddy the Fish, clean-shaven but tattered, was alternately wetting the pencil lead in his mouth and eating peanuts. Master of None They even managed to get six hundred amperes through a piece of lead wire no bigger than a pencil lead. Islands of Space Then I rubbed my lips, my beard, and my hands with pencil lead, and went to bed. Selected Writings of Guy De Maupassant |
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