mature larvae

例句：

1. 1. The caterpillars have reached the maturity stage and are ready to transform into butterflies.
   毛毛虫已经成熟，准备变成蝴蝶。
2. 2.During the maturation process, the larvae undergo significant changes in their physical characteristics.
   在发育过程中，幼虫会经历显著的身体特征变化。
3. 3. Mature larvae can be found on various plants, where they feed and grow.
   成熟的幼虫可以在各种植物上找到，它们在这里进食和成长。