以莲花坐的姿势你就能保持警觉直至最尽头.

In a lotus posture you can keep alertness to the very end.

在历史课上保持警觉。

Keep your eyes open in history class.

在夜晚行走时，我们需要保持警觉。

We need to keep our vigilance when walking at night.

她有一个变化无常的个性，这让每个人都保持警觉。

She has a mercurial personality, which keeps everyone on their toes.

“我们二十四小时保持警觉”。

We maintain 24-hour alert.

我像猫偷乳酪一样的保持警觉。

I am as vigilant as a cat to steal cream.

温暖的眼睛和大脑使得鲨鱼在寒冷的水中保持警觉。

And warmer eyes and brains keep the sharks alert in cold waters.

她总是保持警觉以防止某种新的灾难。

She was always on the alert for some new calamities.

保持警觉：如果你感觉不好，把你的烦恼倾诉掉。

Be alert: if you feel ill, talk to someone about your worries.

压力是一种生理反应，可以帮助你保持警觉和注意力集中。

Stress is a physical response to stimuli that helps you stay alert and focused.