We were introduced by a mutual friend.是什么意思？

We were introduced by a mutual friend.

我们一个共同的朋友介绍我们认识了。

we

pron. 我们，咱们，笔者，本人，朕，人们；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

introduced

adj. [医]引种的，引进的；v. 提出( introduce的过去式和过去分词 )，介绍，引进，作为…的开头；

例句
The changes will be introduced in April...
这些变更将于4月开始实行。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

mutual

adj. 共有的，共同的，相互的，彼此的；

例句
Diplomats hope the meetings will build mutual trust...
外交官们希望会议能增进彼此的信任。

friend

n. 朋友，友人，资助者，助手，近亲；v. <诗>与…为友；

例句
She came in for a coffee, and told me about her friend Shona...
她进来喝了杯咖啡，并向我谈起了她的朋友肖纳。