guard against

Miners wore a helmet as a guard against falling rocks.

矿工头戴钢盔, 防护落下岩石。

Be on your guard against pickpockets.

谨防扒手。

Be on your guard against thieves.

当心小偷。

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

"要警惕各种假理论,不要上它们当/不要为它们所欺骗。"

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

在科学讨论中要严防主观武断。

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

对阿谀奉承、点头哈腰人要格外警惕!

He guarded himself against vice.

他避免染上坏习惯。

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 英里禁区以減低再度爆炸造成影响。

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

在实际应用中不但方便了井下工人随身携带,而且有效地预防了故发生。