他们遭受了惨重的伤亡。

They have taken heavy casualties.

《柯林斯英汉双解大词典》

由于未能赢得这份合同，造船厂又遭到了一次惨重的打击。

The shipyard has been dealt another crushing blow with the failure to win this contract.

《牛津词典》

美国人对9/11事件记忆犹新。他们通过电视直播观看了卡特里娜飓风，这是美国历史上损失最惨重的灾难。

With the memory of 9/11 still fresh in their minds, Americans watched hurricane Katrina, the most expensive disaster in U.S. history, on live TV.

youdao

I have to believe that the bulk of the killing took place on the flight and so that's why that works out.

但我相信,惨重的伤亡会在逃跑时出现,这就是为什么会算出那么惨重的伤亡数字

耶鲁公开课 - 古希腊历史简介课程节选

The problem is, if your brokerage firm fails you could lose a lot; you could lose your cash account and your security account.

可问题是,一旦经纪公司破产,你可能损失惨重,赔光你现金账户和证券账户上所有的资金

耶鲁公开课 - 金融市场课程节选

If you multiply her, then you want to have as much depth to fill in behind to close that hole as you can, so that that would make your phalanx more sturdy, because you could take more casualties without breaking, that seems reasonable to me.

如果再多一些,你就需要在后面增加足够的排数,尽可能地填补缺口,这会使你的方阵固若金汤,即使伤亡惨重也不影响阵容的坚固,这在我看来是合理的

耶鲁公开课 - 古希腊历史简介课程节选