| 单词 | chemical agent | 
| 释义 | chemical agent [`kem·i·kǝl `ā·jǝnt]  MATERIALS A solid, liquid, or gas employed in three principal categories: war gases, smokes, and incendiaries; through its chemical properties produces lethal, injurious, or irritant effects on humans, makes a screening or colored smoke, or acts as a fire starter.  | 
	
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