They killed the bison, cut off the skins and left the bodies behind to rot.
他们把野牛杀死剥皮,尸体就任其腐烂。
If you want to send a letter to an office abroad that is in a different time zone, you can send a fax, and it will be received even though the office is not open.
如果你要寄信到不同时区的国外办公室,你可以发个传真,即使办公室不开门,信也会被收到。
If we go downhill, we might find a stream, and if we follow the stream we should reach a farm, or a village or a bridge.