He vowed to avenge martyrs.是什么意思？

He vowed to avenge martyrs.

他发誓要为烈士报仇.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

vowed

vt.& vi. 起誓，发誓（vow的过去式与过去分词形式）；

例句
The government, far from being cowed by these threats, has vowed to continue its policy.
该政府丝毫没有被这些威胁吓住，发誓要继续执行其政策。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

avenge

vt. 为…复仇，为…报复；vi. 报复，报仇；

例句
She had decided to avenge herself and all the other women he had abused.
她决定为自己和所有其他被他侮辱的女性报仇。

martyrs

n. martyr的复数形式，烈士( martyr的名词复数 )，殉道者，殉教者，乞怜者（向人诉苦以博取同情）；

例句
It falls to our generation to fulfill the great aspirations cherished by countless martyrs in the past.
过去无数先烈的远大抱负,要我们这一代去实现。