生活在陆地上旳最大的动物是大象。 2，生活在海洋里的最大的是鲸。

Elephants are the biggest animals that live on land. 2, living in the sea is the largest whale.

zhi.98xia.com

儒艮与海牛与大象有关，尽管大象，这种生活在陆地上的巨型动物并不是所有的外观或行为都与儒艮想类似。

Both are related to the elephant, although the giant land animal is not at all similar in appearance or behavior.

article.yeeyan.org

鸟类的祖先是生活在树上的还是生活在陆地上的，这是一个古生物学家们长期争论的问题。

Whether the first birds evolved from arboreal or terrestrial ancestors is a matter of lively debate among palaeontologists.

www.ecocn.org