If you can't get a cab, give me a call. It's not safe to walk home along at night.
如果你叫不到出租车的话,打电话给我,晚上一人走回家不安全。
The killing of the bison changed the whole wildlife of the plains. With fewer bison, grass shoots were not eaten, so grass did not grow as strongly.
屠宰野牛改变了平原的全部野生生物。野牛少了,嫩草没有牛来吃了,草就长得不粗壮。