| 单词 | nitrogen |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔AMOUNT〕How much nitrogen is there in the air? 空气中含有多少氮气？朗文写作活用〔BE〕Nitrogen constitutes 78% of the earth's atmosphere. 氮气占地球大气的78%。朗文写作活用〔CONSIST OF〕The earth's atmosphere is composed mainly of nitrogen, oxygen, and carbon dioxide. 地球大气主要由氮气、氧气和二氧化碳组成。朗文写作活用〔GROW〕The soil in this area is rich in nitrogen. 这个地区的土壤含丰富的氮。朗文写作活用〔MATERIAL〕In order to decompose, all vegetable matter needs supplies of nitrogen. 所有植物性物质的分解都需要氮气的供应。朗文写作活用〔MIX〕After a short time the oxygen and the nitrogen molecules will start to mix. 再过片刻，氧分子和氮分子将开始结合在一起。朗文写作活用〔MIX〕The soil was tested to make sure that it was free from ammonia or any other nitrogen compound. 土壤经过了测定，以保证当中不含有氨或其他氮的化合物。朗文写作活用〔NPN〕Nonprotein nitrogen.非蛋白氮美国传统〔afterdamp〕An asphyxiating mixture of gases, primarily nitrogen and carbon dioxide, left in a mine after a fire or an explosion.爆后废气：火灾或爆炸后，残留在矿井中的一种令人窒息的混合气体，主要含氮气和二氧化碳美国传统〔atmosphere〕Saturn's moon, Titan, has an atmosphere mainly made of nitrogen.土星的卫星泰坦的大气层主要由氮气构成。麦克米伦高阶〔azine〕A six-membered heterocyclic compound, such as pyridine, that contains one or more atoms of nitrogen with a ring structure resembling that of benzene.吖嗪，连氮：由六种元素构成的杂环化合物，如氮苯（吡啶），它由一个或更多的氮原子构成，呈环状结构，类似苯的结构美国传统〔azote〕Used formerly as a name for nitrogen.氨：氮这个名称的以前的用法美国传统〔azo〕Containing a nitrogen group, especially N=N.含氮的：包含一个氮基的，尤指N=N美国传统〔blood gas〕An analysis of the dissolved gases in blood plasma, including oxygen, nitrogen, and carbon dioxide.血液气体分析：分析溶解于血浆的气体，包括氧气、氮气和二氧化碳美国传统〔boil〕Liquid nitrogen boils at a very low temperature.液态氮在很低的温度下就会达到沸点。剑桥高阶〔bond〕Carbon atoms can form bonds with nitrogen and oxygen atoms.碳原子可以与氮和氧原子形成化学键。麦克米伦高阶〔compose〕Air is composed mainly of nitrogen and oxygen.空气主要由氮和氧构成。剑桥高阶〔compound〕Many fertilizers contain nitrogen compounds.许多化学肥料都含有氮化合物。剑桥高阶〔constituent〕Nitrogen is one of the essential constituents of living matter.氮是构成生物的基本成分之一。外研社新世纪〔cover crop〕A crop, such as winter rye or clover, planted between periods of regular crop production to prevent soil erosion and provide humus or nitrogen.间作：在常规农作物生长间期内种植的农作物，比如冬麦或三叶草，以预防土壤侵蚀并能提供腐殖质和氮美国传统〔denitrify〕To remove nitrogen or nitrogen groups from (a compound).使脱硝，使脱氮：（从化合物中）去掉氮或硝酸盐美国传统〔diatomic〕The symbol for diatomic nitrogen is N2.双原子的氮分子符号是N2。剑桥高阶〔diazo〕Relating to or containing a pair of bonded nitrogen atoms, one of which is also bonded to an aromatic hydrocarbon.重氮的：关于或含有一对结合的氮原子的，其中一个还结合一个芳（旋）烃美国传统〔emission〕Britain agreed to cut emissions of nitrogen oxide from power stations.英国同意减少发电站氧化氮的排放量。朗文当代〔fertilization〕The faeces contain nitrogen and it is that which fertilises the desert soil.粪便含氮，而正是氮可以肥化荒芜的土地。柯林斯高阶〔fertilize〕The faeces contain nitrogen and it is that which fertilizes the desert soil.粪便含氮, 而正是氮使荒芜的土地变得肥沃。外研社新世纪〔foam〕Nitrogen seeps into voids in the foam as it converts from liquid to gas.氮气从液态变为气态时渗入到泡沫胶体的空隙。外研社新世纪〔form〕Sulphur dioxide and nitrogen oxide combine to form acid rain.二氧化硫和氮氧化物结合形成酸雨。朗文当代〔freeze〕Liquid nitrogen freezes at minus 209 degrees Celsius.液态氮在零下209摄氏度凝固。麦克米伦高阶〔gas〕Oxygen, hydrogen, and nitrogen are all gases.氧气、氢气和氮气都是气体。剑桥高阶〔high in〕These vegetables are high in nitrogen.这些蔬菜含氮量高。韦氏高阶〔liquid〕The samples were frozen in liquid nitrogen.这些样品冷冻在液态氮里。麦克米伦高阶〔macronutrient〕An element, such as carbon, hydrogen, oxygen, or nitrogen, required in large proportion for the normal growth and development of a plant.大量营养素：满足植物正常生长和发育而需要的大量元素，如碳、氢、氧或氮等美国传统〔nitrate〕Nitrogen is converted into nitrates in the soil which plants can then use.氮转化为土壤中的硝酸盐，可被植物吸收。剑桥高阶〔nitric oxide〕A colorless, poisonous gas, NO, produced as an intermediate during the manufacture of nitric acid from ammonia or atmospheric nitrogen.氧化一氮：一种无色有毒气体NO，在用氨或大气的氮生产硝酸的过程中作为中间物生产出来美国传统〔nitric〕Of, derived from, or containing nitrogen, especially in a valence state higher than that in a comparable nitrous compound.硝酸的：氮的、由氮组成的或含氮的，尤指化合价状态高于其他相似的含氮化合物的美国传统〔nitride〕A compound containing nitrogen with another more electropositive element, such as phosphorus or a metal.氮化物：一种含有氮和另外一种更具正电性元素的化合物，如磷或金属的化合物美国传统〔nitrify〕To treat or combine with nitrogen or compounds containing nitrogen.硝化：用氮或含氮化合物处理或掺以氮或含氮化合物美国传统〔nitrobacterium〕Any of various soil bacteria that take part in the nitrogen cycle, oxidizing ammonium compounds into nitrites or nitrites into nitrates.硝化细菌：一种参与氮环核，将氨的化合物氧化成亚硝酸盐或将亚硝酸盐氧化成硝酸盐的土壤细菌美国传统〔nitrogen balance〕The difference between the amount of nitrogen taken into the body or the soil and the amount excreted or lost.氨平衡：动物体内或土壤摄入的氮量与排出或损失掉的氮量的差额美国传统〔nitrogen base〕A basic compound that contains nitrogen, such as a purine or pyrimidine.氮基：含氮的碱基化合物，如嘌呤或嘧啶美国传统〔nitrogen fixation〕The conversion by certain soil microorganisms, such as rhizobia, of atmospheric nitrogen into compounds that plants and other organisms can assimilate.细菌固氮：通过某种的土壤微生物，如根瘤细菌，将大气氮变为植物和其他有机物能吸收的化合物的转化美国传统〔nitrogen fixation〕The conversion of atmospheric nitrogen into compounds, such as ammonia, by natural agencies or various industrial processes.固氮：通过自然作用或各种工业过程，由大气氮变为氮化合物，如氨美国传统〔nitrogenase〕An enzyme of nitrogen-fixing bacteria that activates the conversion of nitrogen to ammonia.定氮酶：在固氮细菌中催化氮转化成氨的一种酶美国传统〔nitrogenize〕To combine or treat with nitrogen or a nitrogen compound.渗氮：掺入或用氮或氮化合物处理美国传统〔nitrogenous〕Containing nitrogen.含氮的美国传统〔nitrous〕Of, derived from, or containing nitrogen, especially in a valence state lower than that in a comparable nitric compound.含（三价）氮的：氮的，由氮衍生的或含氮的，尤指在其化合价低于其相应的硝酸化合物的情况下美国传统〔paramount〕Nitrogen is of paramount importance to life on earth.氮对地球上的生命至关重要。柯林斯高阶〔phosphate〕Most fertilizers contain nitrogen and phosphates.大多数化肥都含有氮和磷酸盐。剑桥高阶〔phosphine〕Any of several organic compounds having the structure of an amine but with phosphorus in place of nitrogen.碱性染革黄棕：具有胺的结构的、但是以磷替代了氮的有机化合物美国传统〔photochemical smog〕Air pollution produced by the action of sunlight on hydrocarbons, nitrogen oxides, and other pollutants.光化烟雾：由光线与碳氢化合物、氮氧化合物和其它污染物质反应而产生的大气污染美国传统〔smog〕A form of air pollution produced when sunlight causes hydrocarbons and nitrogen oxides from automotive emissions to combine in a photochemical reaction.烟雾污染：一种空气污染，由交通工具排放的碳氢和氮氧化合物在阳光的照射下，发生光化学反应而产生美国传统〔thiazine〕Any of a class of organic chemical compounds containing a ring composed of one sulfur atom, one nitrogen atom, and four carbon atoms, used in making dyes.硫氮杂苯：包括一个硫原子、一个氮原子和四个碳原子的环状有机化合物的任一种，用于制作染料美国传统〔yield〕The decomposition of the solution yields nitrogen.此溶液分解后产生氮。英汉大词典Nitrogen is converted into nitrates in the soil which plants can then use.氮转化为土壤中的硝酸盐，可被植物吸收。剑桥国际Air consists mainly of nitrogen and oxygen.空气主要由氮与氧构成。剑桥国际Air is composed mainly of nitrogen and oxygen.空气主要是由氮和氧组成。剑桥国际Air pollutants, such as sulphur dioxide and nitrogen dioxide, are derived mainly from the combustion of fuels in industrial plants and vehicle engines.二氧化硫和二氧化氮等空气污染物主要源于工厂和汽车引擎中燃料的燃烧。剑桥国际Carbon is next to nitrogen on the periodic table.在周期表里碳紧挨着氮。剑桥国际House plant foods are nearly always compound fertilizers containing nitrogen and phosphates.家用植物肥料几乎总是含氮和磷酸盐的合成农药。剑桥国际Liquid nitrogen boils at a very low temperature.液氮在很低的温度下就达到沸点了。剑桥国际Many fertilizers contain nitrogen compounds.很多化学肥料都含有氮的化合物。剑桥国际Oxygen, hydrogen and nitrogen are all gases.氧气、氢气和氮气都是气体。剑桥国际 |
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