You can ask for a chemical analysis of your tap water.

你可以要求给你的自来水做化学分析。

《牛津词典》

The illness is triggered by a chemical imbalance in the brain.

该病是由大脑里一种化学失衡引发的。

《柯林斯英汉双解大词典》

Clouds of toxic fumes escaped in a huge chemical factory blaze.

从化工厂熊熊烈火中泄漏出团团有毒气体。

《牛津词典》

They also will study chemical and physical properties of the soil samples with a method called infrared spectroscopy.

VOA: special.2009.01.20

I mentioned previously that we do not know a lot about how the mechanical stimulation is being converted into chemical and electrical energy.

先前我曾说过,对于机械刺激到化学和电能的转换,我们还知之甚少。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Don't worry about how they work in the immune system, but what if you could manufacture antibodies then you could make a chemical, an antibody, that is capable of binding to a specific other chemical and you could use that for things.

别管它们在免疫系统内是怎么工作的,只要考虑能不能制造抗体,那么假设你能制造这种化学物质 抗体,抗体又能够同其他特别的化学物质结合,你就可以让抗体为我所用

耶鲁公开课 - 生物医学工程探索课程节选

He's now told the world we'll never again use our nuclear weapons as a deterrent against a chemical or a biological attack.

CENTERFORSECURITYPOLICY: Center For Security Policy

They've sent a very clear message to our enemies that a chemical or a biological weapons attack on this nation could be met with and likely would be met with a nuclear response.

CENTERFORSECURITYPOLICY: Center For Security Policy

And because of technology today, if an organization like that got a weapon of mass destruction on its hands -- a nuclear or a chemical or a biological weapon -- and they used it in a city, whether it's in Shanghai or New York, just a few individuals could potentially kill tens of thousands of people, maybe hundreds of thousands.

WHITEHOUSE: President Obama Holds Town Hall with Chinese Youth