You must keep your head clear.

你必须保持头脑。

I also try and stay healthy and clear-headed.

我也努力保持健康和头脑。

Then I sometimes find it hard to stay awake the next day.

然后第二保持头脑。

All I must do is keep the head clear.

我只消保持头脑就行。

Oh. It's good to get out of my own head, you know?

能让我头脑下真的好。

Keep your head on a swivel. Trust no one.

保持头脑哦。不要相信任人。

Fresh air will clear your head and perk you up.

新鲜空气能让你头脑，精神焕发。

What about this point about thinking clearly?

这个" 头脑" 究竟意味着什么？

Breathing fresh air is a great way to clear your mind and relieve stress.

呼吸新鲜空气能够让你头脑，解压力。

He can keep your mind when you feel like you are losing it.

他能在你丧失理智时让你保持头脑。

He said he wakes up in the morning with a clear head and good energy.

他说他早上来时头脑，而且充满能量。

Yet it takes some of the long time to get any senses into their heads.

然而，需要花长时间才能让他们的头脑。

Care for a drink? -No! I like to keep a clear head when I'm telling people off.

要喝点吗？-不！我发火的时候要保持头脑。

And it's a lot easier to find solutions when your mind is clear!

当你头脑时，找到解决方案会容易得多！

We must become conscious and deliberate creators of our own destinies.

我们必须成为自己命运的头脑、深思熟虑的创造者。

No one actually enjoys cardio, at least people with a modicum of sanity.

没有人真正喜欢有氧运动，至少有些头脑的人是这样。

Well...I wanna keep my head clear for business. - No. No business talk.

我想在谈生意的时候保持头脑。- 不，今晚不谈生意。

It's more important for you to be sharp than for you to be cramming before your test.

对你来说更重要的是保持头脑，而不是考试前死记硬背。

And because they were intelligent, they noticed that the stars revolved in a regular way.

他们都是头脑的聪明人，他们发现，星星转动得有规律。

Fighting to stay conscious, Harry watched it canter to a halt as it reached the opposite shore.

哈利保持头脑，看着它慢跑着到了对岸停下来。