1. The ocean food chain relies heavily on euphausids as a source of nutrition for many marine animals.
海洋食物链主要依赖于磷虾作为许多海洋动物的营养来源。

2. Euphausids, also known as krill, play a vital role in the Antarctic ecosystem.
磷虾，也被称为磷虾，对南极生态系统起着至关重要的作用。