And now the snakes are on the alert.

这些游蛇正虎视眈眈。

" Everybody is on the alert because of what happened with AstraZeneca, "

" 由于阿斯利康事件，现在所有人都保持警惕。"

On Christmas Eve, the children were on the alert for any sign of Santa Claus.

在圣诞夜，孩子们随时注意圣诞老人出现的蛛丝马迹。

A single bull would need to be on the alert to every form of danger.

独行的雄龙需要留意各种形式的危险。

“My Lord, I was constantly on the alert, ” came Lucius Malfoy's voice swiftly from beneath the hood.

“主人，我一直非常留心，”卢修斯·马尔福的声音迅速从兜帽下面传来。

It turns out that our brains are exquisitely designed to keep us safe and on the alert for danger.

原来我们的大脑是被精心设计来保护我们的安全并保持危险警惕的。

His ears, his nostrils were on the alert.

他的耳朵， 他的鼻孔都处于警戒状态。

Instantly the askaris and the whites were on the alert.

阿卡里人和白人立即警觉起来。

Be on the alert for anyone acting suspiciously.

【alert】警惕举止可疑的人。

But with the council back on the alert, it is not a good time for Stefan to fly off the handle.

但是委员会现在又起了疑心，Stefan这样失控可太不是时候了。