depends on the turn of the seasons. 都依赖于季节的更迭
To get through the winter on these prairies, 想要在这草原上度过严冬
depends on getting through to the ground. 取决于能否挖到地面的食物
A giant anteater on the plains of South America. 这是一只生活在南美平原上的大食蚁兽
and seasonal floods experienced on many grasslands. 不受草原酷暑和季节性洪水的伤害
They're always built on a north-south axis, 全部建成南北走向
It's estimated that over one third of the grass that grows on Earth 据估计 地球上超过三分之一的草
Yet they're harvested on an industrial scale... 然而却被小小的切叶蚁
They're found wherever grass grows on the planet, 地球上有草的地方 都有它们的踪影