tree louse

例句：

1. 1. The tree louse is a common pest that can damage trees.
   树虱是一种常见的害虫，可以损害树木。
2. 2. The tree louse feeds on the sap of young trees, causing them to die.
   树虱以幼树的汁液为食，导致它们死亡。
3. 3. To control the tree louse population, we need to identify and remove infected trees.
   为了控制树虱的种群，我们需要识别并移除感染的树木。