| 单词 | Notonecta undulata |
| 释义 | Notonecta undulata (once / 11819311 pages) n WORD FAMILY Notonecta undulata n predaceous aquatic insect that swims on its back and may inflict painful bites Syn|Hyper backswimmer 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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