I noticed that she is watchful and alert.

我注意到她小心而警惕。

The son is under watchful eyes of his father.

儿子在他父亲的照看之下。

This girl keeps an watchful eye on her luggage.

这个女孩小心看护着她的行李。

The best thing is to be watchful and see the family doctor for any change in your normal health.

最好的做法就是保持警惕，身体一有变化就去看家庭医生。

A close-up shows the watchful eye of a Gaboon viper, Africa's largest viper.

这张特写显示了非洲最大的毒蛇加蓬蝰蛇警惕的眼睛。

At first, she was very nervous and the robin himself was indignantly watchful.

一开始，她很紧张，知更鸟自己愤怒地警惕着。

Her expression was watchful and alert.

她露出一副察言观色、处处提防的表情。

The children played under the watchful eye of their father.

孩子们在父亲悉心看护下玩耍。