They have sea cows, like my poster.

他们这里有海象，像我的海报中画的那样。

Duck, let's go and see the sea cows.

小鸭子，我们出发去看海象吧。

So, Sarah, do you want to be a sea cow?

那么莎拉，你想成为海象吗？

The one thing Steller couldn't do was save the sea cow itself.

有一件事是施特莱力所不能及的，那就是拯救海牛本身。

Manatees are large, fully aquatic marine mammals that are sometimes referred to as sea cows.

Manatees（海牛）是大型的完全水生哺乳动物，有时也被称为 sea cows。

They spend a lot of time grazing in shallow waters...hence, their affectionate nickname, the " sea cow" .

它们花很多时间在浅水区吃草，继而获得了一个有爱的昵称——“海牛”。

Did you guess that they were from a blubbery, 10-foot long sea cow, otherwise known as a manatee?

你会猜这是肉乎乎的、10英尺长的海牛发出的吗？

First, the sea cows were massive creatures.

首先， 海牛是巨大的生物。

Deadly tiger sharks blend into seagrass meadows before pouncing on sea cows and sea turtles.

致命的虎鲨在扑向海牛和海龟之前混入海草草甸。

A couple of sea cows could feed a small Siberian village for months.

几头海牛可以养活一个西伯利亚小村庄数月之久。

We have evidence that the sea cow population was at its largest hundreds of years before the 1700s.

我们有证据表明， 在 1700 年代之前的数百年， 海牛数量达到了最大。

Mining for gold, for example, affects the mangroves, which are home to critically endangered plants and this vulnerable sea cow.

例如，金矿开采会影响红树林，红树林是极度濒危植物和这种脆弱的海牛的家园。

So while the Siberians certainly did hunt the sea cows, they didn’t need to hunt a lot of them.

因此，虽然西伯利亚人确实猎杀了海牛， 但他们并不需要猎杀很多。

So it’s unlikely they were the ones who brought the sea cows to the point of extinction.

所以他们不太可能是把海牛带到灭绝边缘的人。

But, actually, by the time that the Europeans arrived, the sea cow population was already quite small.

但实际上，欧洲人到来时， 海牛的数量已经很少了。

The truth is we don’t know what the main cause of extinction of Steller’s sea cow was.

事实上， 我们不知道虎头海牛灭绝的主要原因是什么。

Third, it might seem like the European traders were responsible because the sea cows became extinct soon after the Europeans arrived.

第三，看起来欧洲商人应该对此负责， 因为海牛在欧洲人到达后不久就灭绝了。

So something was causing a serious and on-going decrease in the sea cow population long before the Europeans arrived in the Bering Island area.

因此，早在欧洲人抵达白令岛地区之前， 就有某种因素导致海牛数量严重且持续减少。

Since there is no indication of broader ecosystem problems, the kelp was probably growing just fine and the sea cows did not experience food shortage.

由于没有迹象表明存在更广泛的生态系统问题， 海带可能生长得很好， 海牛也没有遇到食物短缺的情况。

Manatees, also known as sea cows, are large, slow moving animals that live in the rivers and marshy coastal areas of West Africa, the Amazon, the Caribbean Sea, and the Gulf of Mexico.

海牛又被称为sea cows，是一种移动缓慢的大型动物，它们生活在西非、亚马逊河、加勒比海域，以及墨西哥湾的河流及沿海沼泽地带。