| 单词 | biological agent | 
| 释义 | biological agent [¦bī·ǝ¦läj·ǝ·kǝl `ā·jǝnt]  ORDNANCE Any of the viruses, microorganisms, and toxic substances derived from living organisms and used as offensive weapons to produce death or disease in humans, animals, and growing plants.  | 
	
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