any of an order of insects with an aquatic nymph and a short-lived fragile adult with membranous wings: order Ephemeroptera
| 单词 | mayfly |
| 释义 | mayflynoun (pl -ies) (pl mayflies)any of an order of insects with an aquatic nymph and a short-lived fragile adult with membranous wings: order Ephemeroptera |
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