small moth-like insect having two pairs of hairy membranous wings and aquatic larvae
例句
用作名词 (n.)
Instead, it secretes a glue and uses this to stick bits of sand together to form its casing, in the way that a freshwater caddis fly larva does. 相反，它分泌胶质后，使用它与沙子一起构建自己的壳，与淡水石蛾幼虫的构建方式相同。
美
