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Activity 2a Listen and match the words with definitions.
活动2a 听下列文章，将词义与单词互配
Can you tell us about the manatees, please?
你能给我们讲一讲海牛吗？
Sure. We're trying to save them.
当然，我们正在营救它们。
Why? Are they endangered?
为什么？它们是濒危动物吗？
Yes. There used to be a lot of manatees, but now there aren't very many of them.
是的。以前有许多海牛，但是如今已经所剩无几。
Do you know how many there are?
你知道现在有多少只海牛吗？
At this point, there are only about 2, 500 in the U.S.
目前，美国只有2500只海牛。
In 1927, it was discovered that they were endangered.
1927年，海牛成为了濒危动物。
Since then, the government has passed laws to protect them.
自此以后，政府开始立法来保护它们。
Where do they live?
它们生活在哪里？
Their favorite habitat is the water under the trees in mangrove swamps.
它们最喜欢生活在红树林沼泽中。
And why are they endangered?
为什么它们濒临灭绝。
Some of the swamps have become polluted.
因为沼泽受到了污染。
Also, there sometimes isn't enough food for all of them.
有时，它们的食物不够充足。
As you can see, they're large.
它们的体型庞大。
The average manatee is about ten feet long and weighs about 1, 000 pounds.
海牛平均为10尺长，重达1000磅。
They need about 100 pounds of aquatic feed a day.
它们每天需要大约100磅的海洋生物。
Aquatic feed?
海洋生物？
Oh, that's underwater plants and vegetation.
就是水中的草本植物。
That's what they eat.
它们食用这些来生存。
译文属可可英语原创，未经允许，不得转载。
