We must guard against accident.
我们必须谨防事故。
We must guard against such a situation.
我们必须警惕这样的局面。
Guard against mispronunciation when you learn a foreign language.
学外语时要提防发音错误。
You must guard against catching a cold.
你一定要防止得感冒。
guard sb/oneself/sth against sthTake this medicine regularly, it will guard you against a return of the illness.
按时服此药可防止你旧病复发。
He guarded himself against vice.
他避免坏习惯。
Wear a hat to guard your face against the sun.
戴顶帽子可以遮阳光。
We were guarded by sentries against surprise attack.
我们由哨兵守卫,以免遭受突然袭击。
I will guard you from all dangers.
我会保护你,使你不受任何危险。
The wall guards the place from thieves.
围墙保护此地不受盗贼之扰。
This medicine will guard you from a cold.
这种药将会帮助你预防感冒。
The fence along the middle of the road is intended to guard vehicles from crashing into each other.
道路中央的防护栏是为防止汽车相撞而设的。
Be on your guard against thieves.
当心小偷。
We shall have to be on our guard against making mistakes like that in the future.
我们今后必须防止发生类似错误。