Typically, food chains involve around four steps.

通常，物链包括大约四个步骤。

We were the bottom of the food chain.

我们处于物链的底层。

All food chains start with plants.

所有的物链均开始于植物。

People high up the food chain.

位高权重的人。

The entire food chain would collapse.

整个物链会崩溃。

They're now widely available at fast food chains.

现，它们快餐连锁店里随处可见。

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

但河马粪便真重要的意义于物链中的地位。

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

它位于一条巨大物链的顶端。

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

你这物链底层的没资格顶嘴。

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

不能忘记物链的底层，对吧？

At the top of the food chain are the Raptors.

物链的顶端是迅猛龙。

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

为了生存，一些植物成为物链上的逆袭者。

Once in farm animals, they become part of the food chain.

一旦农场动物使用抗菌素，那么抗菌素也会成为物链的一部分。

From bees to dogs, we're moving up the food chain today.

从蜜蜂到狗，我们今天向物链的上端移动。

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

如果这种情况发生，整个物链将遭到严重破坏。

We say that they are at the top of the food chain!

我们说它是站物链顶端的！

[Bailey] You're interns. Grunts. Nobodies. Bottom of the surgical food chain.

你们是实习医生，新兵，什么都不是 外科的物链的最底层。

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

我应该物链的顶端。

Burger king is not the first fast food chain to offer meatless patties.

汉堡王不是第一家提供素汉堡的快餐连锁店。

If the trend continues, entire food chains and webs may be at risk.

如果这种趋势继续下去，整个物链和网络都可能面临风险。