1.each other 彼此，互相

They bounced their ideas off each other.
他们相互交换彼此的想法。

They swaggered down the street, hooking on each other.
他们互相挽着手臂大摇大摆地沿着大街走去。

2.come to v. 想起；共计

As he came to a bridge, he heard a truck approaching.
在他来到一座桥头时，他听见一辆卡车驶来。

In a few minutes he suddenly came to.
过了一会儿他突然苏醒过来。