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单词
backswimmer
释义
WordReference Random House Unabridged Dictionary of American English © 2024
back•swim•mer
(bak
′
swim′ər),
USA pronunciation
n.
Insects
any of numerous predaceous aquatic hemipterous insects, of the family Notonectidae, that swim on their backs, and may inflict a painful bite if handled. Also called
boat bug.
back
1
+
swimmer
1860–65
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更新时间:2025/8/1 5:26:36