| 单词 | backswimmer |
| 释义 | backswimmer (extremely rare) n WORD FAMILY backswimmer USAGE EXAMPLESIt was found in green shield bugs, spined soldier bugs and three species of backswimmer. BBC(Jan 15, 2014) n predaceous aquatic insect that swims on its back and may inflict painful bites Syn|Hyper Notonecta undulata bug, hemipteran, hemipteron, hemipterous insect insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis |
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