A bullet had grazed his arm.是什么意思？

A bullet had grazed his arm.

一颗子弹擦过他的手臂。

bullet

n. 子弹，弹药，弹丸，[印]着重号；

例句
The houses bear the marks of bullet holes.
房子上散布着弹孔。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

grazed

v. （让动物）吃草( graze的过去式和过去分词 )，轻擦，擦破，擦过，掠过；

例句
The hills have been grazed by sheep because they were too steep to be ploughed...
这几座山过于陡峭，不适于耕种，所以就用来牧羊了。

his

pron. (he的所有格)他的，(he的物主代词)他的东西；det. 属于他的，用于名词前，自己的，指某人的，上帝的；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

arm

n. 臂，武器，[复数]战事，权力；vi. 准备（斗争），准备行动（against）；vt. 装备（防御工事），准备（攻击或迎击），配备，防护；

例句
He has never put an arm around his wife to accommodate photographers...
他从未为了迎合摄影师而搂住妻子。