海洋的浮游生物即构成了食物链底端，又是我们地球碳-氧循环的交换场。
The ocean's planktons form the bottom of both the food chain and the bulk of the carbon-oxygen cycle for our planet.
这是典型的涉及在食物链底端(浮游植物是植物，反之浮游动物是动物)的象磷虾等植食动物的鱼吃鱼的事件。
Typically, this is a fish-eat-fish affair, with vegetarians like krill taking their place at the bottom (phytoplankton are plants, whereas zooplankton are animals).
因为随着我们对大自然了解的越多，我们就越能认识到它的相互依存性。整个大自然，从食物链的最高端一直到最底端，都紧密联系在一起。
The more we learn about nature, the more we discover how interconnected it is—from the top of the food chain all the way to the bottom.
应用推荐