Life on the ground is more dangerous... 地上的生活更危险
The cheetah has lost a lot of ground... 猎豹节节败退
But the ground beneath all their feet was still on the move, 但它们脚下的土地仍在移♥动♥
The toxic rain poisoned the ground... 毒雨毒害大地
It is so cold that the ground is constantly frozen. 由于天气寒冷形成了冻土层
Monocultures of trees are gaining ground all over the world. 单一树种在全球广泛种植