The future of an entire species hangs on survival of a tiny number of mothers like this one. 整个物种的未来寄托在为数不多的几只母豹身上 就好比这一只
Here nature stages one of her greatest dramas - 大自然正在此上演着一幕最壮观的演出
there were one and a half billion people on Earth. 地球上生活着15亿人