The great fear is that the next mass assault will involve the use of lethal biological agents, poisonous chemicals or radioactive material.

人们极为害怕下一次大规模的袭击会使用致命的生物制剂、有毒的化学物质或放射性物质。

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In the future, artificial skin could be studded with sensors that respond to chemicals, biological agents, temperature, humidity, radioactivity or pollutants.

在未来，人造皮肤将会被镶上针对化学、生物制剂、温度、适度、放射性、污染物等刺激的感知器。

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The major polluting agents are animal wastes, antibiotics and hormones, chemicals from tanneries, fertilizers and the pesticides used to spray feed crops.

主要的污染物是动物粪便、抗生素和激素、制革厂的化学品、用于饲料作物的化肥和杀虫剂。

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The treaty lists the agents and precursor chemicals that will be subject to control.

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Last week, troops from the 101st Airborne found a stash of chemicals, which was investigated as possible nerve agents, but the material turned out to be pesticides, Freakly said.

CNN: U.S.: Mobile labs found in Iraq

The solution (pun intended) involved tacking sodium dithionite and hydro-chloride onto the antibiotic, making it into a water-soluble salt. (Drugs prepared as hydrochlorides are commonplace.) To keep the chemicals from oxidizing, Adams tested 50 different agents, such as citric acid and ascorbic acid, and played with various ratios until he got the right pH balance.

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