they're the only monkeys in the world that live almost entirely on grass. 它们是世界上唯一完全以草为生的猴子

44. Most monkeys couldn't live up here.
    大部分猴类都无法在此生存
45. There's no food and few insects to feed on.
    这里没有食物 可以吃的昆虫也很少
46. But Gelados are unique -
    但是狮尾狒却很特别
47. they're the only monkeys in the world that live almost entirely on grass.
    它们是世界上唯一完全以草为生的猴子
48. They live in the largest assemblies formed by any monkeys.
    它们生活的社群是所有猴类中最大的
49. Some groups are 800 strong
    有的甚至能达到800只
50. and they crop the high meadows like herds of wildebeest.
    如同散布在高山草场上的角马群

来自《行星地球 第一季 第二集 Planet Earth S01E02 山地》第 47 行