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位。

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

它位于一条巨大食物链的顶端。

We were the bottom of the food chain.

们处于食物链的底层。

When it's washed, it releases microplastics into the ocean, into the food chain, into us.

当它被洗涤时，会释放塑料微粒进入海洋，进入食物链、进入们体内。

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

从蜜蜂到狗，们今天正在向食物链的端移动。

Here's Ruth Alexander, presenter of BBC World Service's The Food Chain, to continue the story.

BBC世界服务栏目《食物链》的主持人露丝·亚历山大继续讲述了这个故事。

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。

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

如果这种生，整个食物链将遭到严重破坏。

Every day they're dealing with predators, up and down the food chain.

它们每天都在和捕食者打交道，在食物链的游和下游。

In such a frugal environment, the pika's farming helps to kick start the food chain.

在如此俭朴的环境，鼠兔的耕作有助于推动整个食物链。

Sharks' position at the top of the food chain affects the entire ocean ecosystem.

鲨鱼在食物链顶端的位置影响着整个海洋生态系统。

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

你这食物链底层的没资格顶嘴。

So certain food chains actually became stronger after the fire than they were before.

所以，大火过后，相应的食物链会变得比之前更加稳定。

This seems to be dangerous no matter where you are on the food chain.

对食物链中的任何生物这都是危险的。

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食物链的一部分。

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

不能忘记食物链的底层，对吧？

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

如果这种趋势继续下去，整个食物链和网络都可能面临风险。

Living at the top of the food chain, sharks can accumulate dangerous levels of methylmercury.

因为生活在食物链的顶端，所以鲨鱼可以积累达到危险水平的汞。

The other one is that they eat the fish that eat those.

所以这取决于鲸鱼捕食的动物在食物链中的位置。

If their DNA gets into Earth's food chain, our entire species could be sterilized.

如果它们的基因进入地球食物链，们全部的物种都可能绝育。