alderfly / ˈɔl dərˌflaɪ /

📖毕业后词汇苍蝇桤木树桤木树苗桤树

alderfly 的定义

n. 名词 noun

plural al·der·flies.

  1. any of several dark-colored neuropterous insects of the family Sialidae, the larvae of which are aquatic and predacious on other aquatic insects.