The only mountain range of South America I know is the Andes.

我唯一知道的南美山脉是安第斯山脉

The rainy season in the Andes normally starts in December.

安第斯山脉的雨季一般从12月开始。

Tensions in the northern Andes will persist.

北安第斯山脉地区的紧张局势仍会继续。

The ranch is a base for pack trips high into the Andes.

大农场是爬安第斯山的背包旅行的基地。

It is now the main threat to human security in the Andes.

如今，气候变化成为安第斯山脉人类安全的主要威胁。

Military success in the Andes depended on such livestock.

要想在安第斯山区获得军事上的成功，就必须得依赖这些牲畜。