backswimmer.
/bak-swim-er/US // ˈbækˌswɪm ər //
仰卧起坐者,仰卧起坐的人,仰泳者,仰卧起坐
Definitions
n.noun · 名词
- 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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