敌火下撤退是一切军事行动中最困难和危险的。

Retreat under fire is the most difficult and perilous of all military operations.

youdao

如果在穿越危险地带时遭到敌火力打击，就要多用烟雾弹，用压制火力掩护穿越的队伍。

Note that if the group is under fire and crossing a danger area, smoke should be used extensively, and security for the crossing elements should be provided by suppression fires.

youdao

因为压制的重点并不在于击杀敌射手，能击杀当然是更好，但是只要让敌火暂歇就算是起了压制的作用了。

Sometime your goal is not just to kill; of course, that will be nice if you can do it.

youdao