This substance has now been cloned by molecular biologists.

这种物质现已被分子生物学家克隆。

《柯林斯英汉双解大词典》

This substance has an affinity for water.

这物质和水有亲和力。

《新英汉大辞典》

This substance should not come into contact with food.

这种物质切莫与食物接触。

《牛津词典》

The substance of this summit on Libya's Mediterranean seacoast has been largely overshadowed by the personalities attending, and those who are not.

VOA: standard.2009.07.02

According to the dualist, the mind is this immaterial substance and we could call it by different names.

根据二元论,心灵是非物质的实体,我们可以用不同的名字称呼它

耶鲁公开课 - 死亡课程节选

And, in fact there's a technique of analysis used today that's called Rutherford back scattering where people actually saw that this is a means of identifying the substance, the sample.

事实上这是现在用的一种分析技术,称作卢瑟福背散射,就是人们实际上看到的那样,这是鉴别物质样品的一种方法。

麻省理工公开课 - 固态化学导论课程节选

This substance (an iron-magnesium silicate whose greenish colour is reminiscent of olives) weathers rapidly in the presence of water.

ECONOMIST: Martian chronicles

This substance is a neurotransmitter one of several dozen chemical messengers that carry signals from one nerve cell to another.

ECONOMIST: Great drug, shame about the delivery system | The

This substance is used in making glass, bricks, chemicals and cleaning products.

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