frass

n.蛀屑,幼虫的粪便

昆虫经过消化后排放的固体粪便。

名词

1、The frass left behind by the caterpillars was evidence of their presence on the plants.
这些毛毛虫留下的粪便是它们在植物上存在的证据。

2、The frass can provide valuable information about the diet and habits of certain insects.
昆虫的粪便可以提供有关其饮食和习性的有价值信息。