You can see llamas in South America.

你可以在南美洲看到骆马。

Camels are represented in the New World by llamas.

在美洲相当于骆驼的是美洲驼。

He travels with his father and a herd of llamas to trade salt.

他和他的父亲及一群骆驼出门买卖盐。

The Inca used llamas as beasts of burden but had no animals to ride.

印加人将美洲驼当作役畜驱使，但他们没有可供骑乘的动物。

For example, assume that you have a book that defines everything about llamas.

比方说，假设有一本书定义了骆驼。