美国得注意不要高估自己。

The United States has to be careful it doesn't overplay its hand.

《柯林斯英汉双解大词典》

然而，要注意不要走极端。

However, be careful not to go to extremes.

youdao

然而，攀岩者必须注意不要污染环境。

Climbers, however, must be careful not to pollute the environment.

youdao

And I will try and remember not to include Jude and Wes in the classroom discussions, but you should be aware that they're there.

我会尽量注意,不要让他们两位加入课堂讨论的,但是你们也要注意到他们的存在

耶鲁公开课 - 博弈论课程节选

The final piece of advice, this is very important so please pay attention to this, which is, I ask you not to talk to your neighbors during lecture.

最后一点建议,很重要,请注意听好,我要求你们,上课的时候,请不要和你的周围的同学说话

耶鲁公开课 - 基础物理课程节选

Convention, OK, this negative sign is just a pure convention. You just got to use it all the time. If you use an old textbook, written when I was taking thermodynamics, they have the opposite convention, and it's very confusing. But now we've all agreed on this convention, and work is going to be with the negative sign here.

系统对外界做功的符号为负,这就是我们,在本课中的规定，纯粹出于统一符号的需要，有些教科书中，可能会使用相反的符号规定,注意不要混淆了，这门课上,我们将一直使用。

麻省理工公开课 - 热力学与动力学课程节选