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单词 stonefly
释义

WordReference Random House Unabridged Dictionary of American English © 2024
stone•fly  (stōnflī′),USA pronunciation n., pl. -flies. 
  1. Insectsany of numerous dull-colored primitive aquatic insects of the order Plecoptera, having a distinctive flattened body shape: a major food source for game fish, esp. bass and trout, which makes them popular as models for fishing flies.
  • late Middle English ston flie. See stone, fly2 1400–50

Collins Concise English Dictionary © HarperCollins Publishers::
stonefly /ˈstəʊnˌflaɪ/ n ( pl -flies)
  1. any insect of the order Plecoptera, in which the larvae are aquatic, living beneath stones, and the adults have long antennae and two pairs of large wings and occur near water
Etymology: 15th Century: so called because its larvae live under stones in rivers
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