可悲的是这次进攻结果造成重大伤亡.

Tragically, the attempt resulted in heavy casualties.

在这次边界武装冲突中双方都遭到了重大伤亡.

Both sides suffered heavy casualties in the border armed conflict.

双方在那次边界武装冲突中，都遭受重大伤亡。

Boths sides suffered heavy casualties in the border armed conflict.

新冠疫情已经造成了一个新的重大伤亡，这次是一个政治上的伤亡。

The COVID-19 pandemic has claimed a big new casualty, this time a political one.

一架军机误投了一颗炸弹, 造成重大伤亡.

A warplane accidentally dropped a bomb, killing and wounding thousands of civilians.

不出一个月，一个具备生物学硕士同等学力的人就能够完成制作过程的主要步骤，进而生产出能够造成重大伤亡的剂量。

In less than a month, someone with the equivalent of a masters degree in biology could probably accomplish the necessary steps to produce enough toxin to cause mass casualties.

对重大伤亡紧急情况的持续性深度培训，尤其是在队长以下的级别重视START伤检分类系统的完整工作知识的培训。

Continued in-depth training in mass casualty emergencies with an emphasis on a complete working knowledge of the START Triage system, particularly below Battalion Chief level.