我们的工作要时刻保持警惕。

Wǒmen de gōngzuò yào shíkè bǎochí jǐngtì.

Our job requires us to stay alert at all times.

我们要时刻保持警惕。

Wǒmen yào shíkè bǎochí jǐngtì.

We need to stay vigilant at all times.

他时刻关注着最新动态。

Tā shíkè guānzhùzhe zuìxīn dòngtài.

He keeps track of the latest developments at all times.