VOA慢速英语:Scientists: Monkeys Used Raft to Cross Ocean

短语讲解：

1. The monkeys are similar to today’s capuchins, small monkeys that often perform with humans at the circus.

be similar to 类; 与…相似; 类乎
例句：The scrapie agent in sheep may be similar to viroids.
绵羊的搔痒病因子可能也是类病毒。

2. They said the teeth belonged to a species they call Panamacebus transitus.

belong to 属于
例句：I belong to no party.
我不属于任何派别。

3. When the species lived, South America was not in contact with other continents.

in contact with 接触; 联系; 与……联系
例句：Are you in contact with him now?
你现在与他有联系吗?

4. The animals grew and changed in interesting ways because they were separated from other animals.

separate from 分开; 区别
例句：Business bank accounts were kept separate from personal ones.
银行的商业账户和个人账户是分开管理的。

5. Bloch believes these monkeys were the only mammals that were able to cross the waterway from South America to reach present-day Panama.

be able to 能够
例句：We must be able to stay impartial at all times.
我们必须经常保持公正的态度。