SCIENCE STUDY

Who are the ‘cows of the sea’?

作者：TEENS

儒艮——海底最大的食草动物。

Who is the largest grass-eater in the sea? The answer is the dugong (儒艮). It is 2.4 to 3 meters long and weighs 230 to 500 kg. The dugong is the only vegetarian (素食的) sea mammal (哺乳动物). Some people call them the “cows of the sea”.

点击阅读全文

对本期电子报订户、有效期内的VIP教师会员和本学期初三尊享卡用户，我们开放所有内容：
如果您拥有以上权限，请点这里登录；
订阅电子报，请点这里；
激活VIP教师卡，请点这里；
激活21英语尊享卡，请点这里。