He is a clear-headed man. / He is a clear/lucid thinker.

他头脑清楚。

He is clear-headed and quick to respond even at a critical juncture.

即使在危急关头，他也很灵醒。

I want to say we are both confident and clear-headed.

我们既自信又清醒。

I had a clear headed after I drank few hundreds of mine .

所以我喝了几百元的酒，依然很清醒。

In addition, Customer must be clear-headed when someone wants to cheat you.

此外，当有人要骗你的时候客户必须有着清醒的头脑。

Clear-headed and those who are smart in Geanguanhuo after trying to find out a different way.

而那些头脑清醒的聪明者则在隔岸观火后试图寻找出一条不同的路。

Her great works are indispensable clear-headed food to her days as well as the present society.

她的剧作对于当时社会乃至今天都是不可或缺的一帖清醒剂。

Questions that only you can answer in your most sane, clear-headed of moments: Do you feel truly loved?

只能在你最理智，头脑最清醒的时刻回答：你感觉到了真爱吗？

Would you be able to make a clear-headed decision if your company asked you to take an early retirement?

如果你的公司让你提前退休你能否做出头脑清醒地做出决定?

When one's peaceful, happy, and clear-headed, one will be able to consider matters well and speak with subs…

内心平静快乐，头脑清醒，考虑事情就会清楚齐全，说话就会得体。