at all times=always 一直，始终; 在任何时候；不论什么时候

请看经典例句：

Doctor Liu is on call at all times.

不论什么时候刘医生随叫随到。

Our representatives are ready to help you at all times.

我们的代表随时准备帮助你。

Accurate records must be kept at all times.

任何时候都必须保存准确的记录。

You must carry ID at all times.

你必须随身携带身份证件。

They advise that a passport be carried with you at all times.

他们建议护照要随时带在身边。

We insist on the highest standards at all times.

我们始终坚持最高标准。

Staff members are trained to treat customers with civility at all times.

全体职员接受训练，以便在任何时候对顾客都以礼相待。

A pilot must remain vigilant at all times.

飞行员必须随时保持警惕。

I expect to be kept fully briefed at all times.

我希望随时向我报告全面情况。

The chalet was kept ready and waiting for them at all times.

小屋已收拾好随时迎接他们的到来。

All transport operations, whether by sea, rail or road, are closely monitored at all times.

所有的交通活动，无论是通过海路、铁路还是公路，都时刻受到密切监视。

The centre is staffed at all times

该中心随时都有工作人员。

No man is wise at all times.

人难以聪明一世。

Our door remains open at all times for our friends.

我们的大门对朋友永远是敞开的。

The other is to protect the president at all times.

另一个是时刻保护总统。