be alert to

And they had to be alert to Chelsea's countering.

同时他们亦需要提防切尔西的反击.

Be alert to shame lurking within you.

要时刻警觉羞愧就潜伏在你的内心.

You must be alert to the coming danger.

你必须对于正在接近的危险保持警觉.

One should be alert to involvement of other organ systems in diagnosing these entities.

诊断这些疾病时,应警惕其它器官系统受到连累.

Nevertheless, we have to be alert to the challenges which lie ahead.

但是, 我们必须居安思危.

Be alert to existing and potential production problems and take necessary corrective action.

提防存在和潜在的生产问题,并采取必要的纠正措施.

Designers and contractors should be alert to constant innovations in bridge design and construction methods.

设计者和承包商们要注意桥梁设计和施工方法的不断革新.

Be alert to fundamental shifts.

对逆转保持警惕.

But we have to be alert to the challenges which lie ahead.

不过,对于今后的种种考验,我们却不可掉以轻心.