Some special fluorescent chemical sensor could be used to detect TNT, DNT and other explosive agent which is very important for military wars, industrial production, daily life safety and so on.

一些特殊的荧光化学传感器可以用于对TNT， DNT等爆炸剂进行检测，这对军事战争，工业生产以及日常生活安全等是十分重要的。

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He was the point man on major crises ranging from the arrest of a CIA agent in Pakistan in 2011 to the explosive row over controversial Afghan presidential elections in 2009.

BBC: Barack Obama delivering his State of the Union address