One that would last for 200,000 years. 这个时期将持续20万年
At last, she reaches her own nest. 最后 它到达了自己的巢穴
the Last Universal Common Ancestor... 最后共同祖先
the last survivors of the dinosaurs... 是恐龙时代的最后幸存者
But elsewhere, deforestation is a last resort to survive. 但在别处 森林砍伐是最后的生存手段
In the last century, half of the world's marshes were drained. 上世纪内 地球一半沼泽消失殆尽
And in the last 50 years, 21 million wells have been dug. 过去五十年内 挖了两千一百万口水井
It can build forests of skyscrapers, each one taller than the last, 使得摩天大楼林立 一座高于一座