guard against

Miners wore a helmet as a guard against falling rocks.

矿头戴钢盔, 防护落的岩石。

We were guarded by sentries against surprise attack.

我们由哨兵守卫, 以免遭受突袭。

Be guard against various sham theories. Don't be fooled by them.

"警惕各种假理论,上它们的/为它们所欺骗。"

You must guard against those who fawn upon you and bow obsequiously before you!

对阿谀奉承、点头哈腰的格外警惕!

In scientific discussions it is essential to guard against subjectivism and arbitrariness.

在科学讨论严防主观武断。

He guarded himself against vice.

他避免染上坏习惯。

So the instrument not only convenient for mineworker, but effective guarded against the fire damp explosion in practice ap...

在实际应用但方便了井的随身携带,而且有效地预防了安全事故的发生。

A 20-mile exclusion zone was set up around the power station to guard against further explosions.

发电厂周围设立了20 英里的禁区以減低再度爆炸造成的影响。

Be on your guard against thieves.

心小偷。

Be on your guard against pickpockets.

谨防扒手。