亚洲网紅露点

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backswimmer

[ bak-swim-er ]

noun

  1. any of numerous predaceous aquatic hemipterous insects, of the family Notonectidae, that swim on their backs, and may inflict a painful bite if handled.
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亚洲网紅露点 History and Origins

Origin of backswimmer1

First recorded in 1860鈥65; back 1 + swimmer ( def )

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