knot borer

例句：

1. 1. The knot borer is a smallinsect that feeds on plant tissue.
   结瘤虫是一种小昆虫，以植物组织为食。
2. 2. This disease is causedby the knot borer, which canbe easily spread by insects.
   这种疾病是由结瘤虫引起的，可以通过昆虫轻易传播。
3. 3. To prevent the knot borer fromspreading, farmers use pesticides tokill the larvae.
   为了阻止结瘤虫的传播，农民使用农药来杀死幼虫。