The aggressors were fiercely fought back.是什么意思？

The aggressors were fiercely fought back.

侵略者遭到猛烈的抵抗。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

aggressors

n. 侵略者，挑衅者，侵略国( aggressor的名词复数 )；

例句
They have been the aggressors in this conflict.
他们一直是这次冲突中的挑衅方。

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。

fiercely

adv. 凶猛地，残酷地，猛烈地，激烈地；

例句
Alton has made himself fiercely unpopular in certain circles.
奥尔顿把自己搞得在某些圈子里极其不受欢迎。

fought

v. 战斗( fight的过去式和过去分词 )，斗争，打架，吵架；

例句
The team fought hard and gave a good account of themselves.
这支队伍奋力拼搏，表现出色。

back

n. 背，背部，背面，反面，后面，后部，（椅子等的）靠

例句
He looked back at the abject, silent girl and repeated his question.
他转过头看着这个噤若寒蝉的女孩，又重复了一遍他的问题。