She killed him by a sledgehammer.是什么意思？

She killed him by a sledgehammer.

她用大锤砸死了他。

she

pron. 她，它；

例句
Her lover walked out on her after she had aborted their child.
她的情人在她打掉胎儿后甩了她。

killed

adj. 被杀死的，断开的；v. 杀死( kill的过去式和过去分词 )，使停止[结束，失败]，破坏，减弱，抵消，使痛苦，使受折磨；

例句
Six passengers were killed in the accident.
六名乘客在车祸中丧生。

him

pron. (he的宾格)他；

例句
They said goodbye to him as he got aboard the train at Union Station.
当他在联合火车站登上火车之际，他们向他道别。

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

sledgehammer

n. 大锤，杀鸡用牛刀，小题大做；

例句
I used a sledgehammer to drive the pegs into the ground...
我用一把大锤子把短桩打进地里。