alderfly
/ˈɔːldəflaɪ/noun
(pl. -flies)
1- a brownish fly-like insect that lives near water and has predatory aquatic larvae泥蛉。
1.1
- Family Sialidae, order Neuroptera: several genera, in particular Sialis.泥蛉科, 脉翅目：数属, 尤指泥蛉属。