... 危险化学品防护服 hazchem protective suit 化学武器防护 chemical weapon defence 化学武器防护 化学武器防护 chemical weapon defense ...
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chemical weapon defense
化学武器防御
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U.S. Defense Secretary Chuck Hagel last week said there is evidence that the chemical weapon sarin has been used on a small scale in Syria, though questions remained about the circumstances surrounding it.
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