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单词 a substance
例句
英语例句库

Salt is a substance we use in cooking.

盐是我们做菜时用的东西。

Fertilizer is a substance put on land to fertilize it.

肥料是施在地里使之肥沃的物质。

A catalyst is a substance which speeds up a chemical reaction.

催化剂是一种能加速化学反应的物质。

She injected them with phytohaemagglutinin (PHA), a substance that induces an immune reaction.

她为它们注射了植物血球凝集素(PHA),这种能够引起免疫反映的物质。

"blister beetle:any of various soft-bodied beetles of the family Meloidae, such as the cantharis, that secrete a substance capable of blistering the skin."

斑蝥,地胆:一种芜菁科软体甲虫,如斑蝥,能分泌一种使皮肤起疱的物质。

The aequorin instantly emits light when triggered by calcium ions -- a substance that is produced when the bioagent-induced cascade occurs in the B cell.

一旦被钙离子——生物介质在B细胞内引发崩溃后所产生的物质——诱发,发光蛋白质立即产生光亮。

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原声例句
VOA慢速英语_健康

The study centered on a substance called PM2.5.

这项研究集中在一种叫做PM2.5的物质上。

历年英语六级听力真题(含译文)

How can such a substance have an effect on the body?

这样一种物质怎么会对人体产生作用呢?

少儿畅学课堂

It may change the state of a substance's matter.

它可能改变物质的状态。

韩刚B2A“译点通”:听力笔记快速上手宝典

This is because of caffeine, a substance found in some plants.

这是因为这些植物中含有咖啡因。

CNN 听力 2013年4月合集

There were some concerns about a substance, though, called anhydrous ammonia.

尽管称为无水氨,但有些人对这种物质表示担心。

如何避免气候灾难

In science, a catalyst is a substance that accelerates a chemical reaction.

在科学中,催化剂是一种加速化学反应的物质。

VOA词汇精讲

As a verb, " coat" also means to cover something with a substance.

作为动词,“coat”也表示用某种物质覆盖某物。

VOA慢速英语_单词故事

One meaning is " a substance or drug used to treat disease or pain" .

它的一个意思是" 用来治疗疾病或疼痛的物质或药物" 。

BBC 听力 2013年7月合集

Officials say the lunch was contaminated with organo-phosphorus, a substance used in pesticides.

官员们表示,午餐被有机磷污染,这是杀虫剂中的一种成分。

VOA Special 2017年2月合集

They tested the chemical extracts of the plants on a substance called Brewer's yeast.

他们从一种名为“布鲁尔氏酵母”中提取了酵母进行检测。

宇宙奥秘

Perhaps a substance that in just a microscopic quantity could cause unimaginable destruction.

也许一种微量的物质就能造成难以想象的破坏。

WIL生活启示录

Well, we already have a substance like this that is consumed on a daily basis.

而我们已经有这种东西了,并且我们每天都吃它。

VOA 常速 2016年7月合集

Researchers used a substance to restore normal blood sugar metabolism in diabetic laboratory mice.

研究人员试图使用一种物质来恢复患有糖尿病实验老鼠在血糖方面的正常新陈代谢。

VOA Special 2016年4月合集

DNA is a substance that carries genetic information in the cells of animals and plants.

DNA是指动植物细胞中携带遗传信息的物质。

VOA Special 2020年8月合集

The researchers found the snake's mouth open. It also contained a substance called natron.

研究人员发现蛇的嘴巴是张开的。嘴巴里还含有一种叫做泡碱的物质。

VOA Special 2014年3月合集

Researchers have joined the material with a substance whose cells collapse when they are hit.

研究者将一种物质加入这种材料,这种物质的细胞能在受到撞击后解体。

心理学小课堂

Sometimes a person starts using a substance or behavior to fit in.

有时,人们用某种物质或行为来融入集体。

Scishow 精选系列

That's because their mealy texture is tied to the breakdown of a substance called pectin.

因为与它们变面有关的是果胶这种物质的溶解。

VOA慢速英语_科技

A contaminant is something that makes a substance no longer suitable for use.

污染物是使一种物质不再适合使用的东西。

Crash Course 综合篇

The strength of the acid or base character of a substance.

—用“p”区分被称为“q”的试液。

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