screwfly

例句：

1. 1.The screwfly is a small insect that feeds on tree sap.
   螺丝虫是一种小昆虫，以树液为食。
2. 2. The screwfly is responsible for spreading the fungus disease called rust.
   螺丝虫负责传播被称为锈病的真菌疾病。
3. 3. The screwfly lays its eggs in the bark of trees, which can be harmful to the health of the trees.
   螺丝虫在树木的树皮上产卵，这对树木的健康是有害的。