prelarva

例句：

1. 1.The larvae of this insect feed on plants.
   这种昆虫的幼虫以植物为食。
2. 2. The nematodes are tiny parasites that live inside the roots of plants.
   线虫是微小的寄生生物，生活在植物根部。
3. 3. Larvae of certain species can be used as bait to catch fish.
   某些物种的幼虫可以作为鱼饵使用。