英语词汇“tracer”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	tracer
释义	tracer noun /ˈtreɪsə(r)/ /ˈtreɪsər/ jump to other results a bullet or shell (= a kind of bomb) that leaves a line of smoke or flame behind it tracer bullets (specialist) a radioactive substance that can be seen in the human body and is used to find out what is happening inside the body Radioactive tracers have been used to map the metabolic activity of the brain.
随便看	the Bronze Age the-bronze-age the Brooklyn Bridge the-brooklyn-bridge the Brown Bomber the BT Tower the bulldog breed the-bulldog-breed the Bull Ring the burden of proof the-burden-of-proof the Burma railway the Burrell Collection the business end the-business-end the CAA the CAB the Cabinet Office the-cabinet-office the-cafe-royal the Café Royal the Cairngorms the-cairngorms the Calcutta Cup the Caledonian Canal

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