We were the bottom of the food chain.

我们处于食物链的底层。

I should be at the top of the food chain by now.

我应该在食物链的顶端。

It's at the top of a huge food chain.

它于一条巨大食物链的顶端。

The entire food chain would collapse.

整个食物链会崩溃。

At the top of the food chain are the Raptors.

在食物链的顶端是迅猛龙。

But the really important thing about hippo dung is its place in the food chain.

但河马粪便真正重要的意义在于其在食物链中的地。

You're a little low on the food chain to...

你食物链底层的没资格顶嘴。

Can't forget the bottom of the food chain, right?

不能忘记食物链的底层，对吧？

It stays in the fish's body, and it enters the food chain.

它会留在鱼的体内，并进入食物链。

And this is when its impact reaches the top of the food chain.

此刻，响传到了食物链的顶端。

Russell says that artificial reef could set up a new dynamic in the food chain.

罗素表示造礁可以建立食物链中新的形态。

All food chains start with plants.

所有的食物链均开始于植物。

Typically, food chains involve around four steps.

通常，食物链包括大约四个步骤。

No one knows what effects the GM material might have on the food chain.

没有知道转基因物质会对食物链产生什么响。

Of course a food chain is not an actual chain.

当然了，食物链不是指肉眼可以看见的链。

Food chain. These are good things you're going to want to know.

食物链。些都是你想知道的好单词。

They can be found in plastic materials and then by passing through the food chain.

它们可以在塑料材料中找到，然后通过食物链。

To survive, some have shifted upward on the food chain.

为了生存，一些植物成为食物链上的逆袭者。

If that happens, the entire food chain will be severely damaged.

如果情况发生，整个食物链将遭到严重破坏。

This is because the loss of key organisms affects the food chains of the environment.

是因为关键生物的损失会响环境的食物链。