They disengaged themselves/ were disengaged after suffering heavy casualties.
在遭受惨重的伤亡后，他们撤离了。
On July 27th, a low-flying Russian-made Su-27 fighter jet crashed into terrified people, causing heavy casualties.
二十七日，一架低空飞行的俄制苏恺二十七型喷射机坠入惊恐的观众群中，造成惨重的伤亡。
heavy [slight] casualties
惨重 [轻微] 的伤亡
The accident took a heavy toll of lives.
事故中人员伤亡惨重。
The Confederate dead and wounded at New Hope Church ran high.
南部联盟军在纽霍教堂的伤亡是惨重的。
The enemy warships(were)disengaged from the battle after suffering heavy casualties.
在遭受惨重伤亡后，敌舰退出了海战。
In Iran-Iraq war,both sides incurred heavy casualties.
在两伊战争中,双方均 遭受惨重伤亡.
That battle took a heavy toll of the Taiping troops for they were attacked front and rear.
那次战役太平军因腹背受敌, 伤亡惨重。
Heavy casualties were reported (ie It was reported that many people had been killed) in the fighting.
据报战斗中伤亡惨重（很多人被杀）.
And I thought it was a ditty rather too dolefully appropriate for a company that had met such cruel losses in the morning.
我觉得，对于早晨伤亡惨重的这帮家伙来说，这支歌是再合适不过了。
If a bullet breaches a canister, we'll have massive casualties.
如果有一颗子弹打穿装有毒气的容器 伤亡会相当惨重
A painful lesson from Vietnam was the high cost of attacking heavily defended targets.
越战中的一个惨痛教训是，空军飞机攻击敌严密防卫的目标时伤亡惨重。
The Syrian army, though suffering deeper serious casualties, had not broken.
叙利亚军队虽然伤亡惨重，但是并未崩溃。
This came after a ceasefire agreement announced late Friday, a deadly day of battles between the two sides.
上周五是双方战争伤亡惨重的一天，而在该天宣布停火协议之后发生了周六的枪战。
High casualties as new breed infest city office building. Human lives at stake. Remove alien threat and restore order to the city.
敌人变异种群已攻入市政办公楼，我方伤亡惨重，形势千钧一发…打退敌人的进攻，确保市区安宁。
It failed after some preliminary successes, and there came another great slaughtering of Russians.
尽管初期获得了成功，他们的努力最终还是失败了，俄国人再次遭受惨重伤亡。
The death of Gover gave Eliza the most terrible wound of her life.
葛罗佛的死使伊莱莎受了她一生最惨重的创伤。
This operation ended in an Allied defeat with 3,400 casualties.
但是，这次行动以盟军的惨败告终，其伤亡人数高达3千4百人。