这个行业不但在地面钻出巨大的坑，还使用轮胎大如房屋的卡车。
It is an industry that makes huge holes in the ground and relies on trucks with tyres the size of houses.
在空中仅一天的距离，但在地面上却是半数寿命的差距。
A day away by plane, but half a life times difference on the ground.
黄鼠狼不常捕食鸟类，但在地面觅食的绿色啄木鸟除外。
It's quite unusual for them to go for a bird but green woodpeckers forage on the ground.
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