词典释义：
[no obj., with adverbial of direction](especially of a bird)move rapidly downwards through the air
（尤指鸟）猛扑，俯冲
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the barn owl can swoop down on a mouse in total darkness 仓鸮在漆黑的夜里能对准老鼠猛扑下来
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the aircraft swooped in to land .飞机向下俯冲降落。
carry out a sudden attack, especially in order to make a capture or arrest
（尤指为了抓捕而）突袭
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armed police swooped on a flat after a tip-off .武装警察在得到密报之后突袭了一所公寓。
[with obj.]
〈非正式〉 猛地抓起；攫取
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she swooped up the hen in her arms .她猛地抓起那只母鸡夹在腋下。
a swooping or snatching movement or action
飞扑；攫取；突袭
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four members were arrested following a swoop by detectives on their homes .四名成员在侦探的一次突袭行动中在家中被捕。
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at （或in ）one fell swoop 见FELL 4 .
"mid 16th cent. （in the sense ‘sweep along in a stately manner’）： perhaps a dialect variant of Old English
