larval population

例句：

1. 1. The larval population of the butterfly is crucial for its survival.
   蝴蝶的幼虫群体对其生存至关重要。
2. 2.The larval population of the coral reefs is declining due to pollution.
   珊瑚礁的幼虫群体因污染而减少。
3. 3. The researchers studied the larval population dynamics in the ocean.
   研究人员研究了海洋中幼虫种群动态。