You'll need to keep a clear head for your interview.

你面试时需要保持清醒的头脑。

《牛津词典》

She needed a clear head to carry out her instructions.

她需要一个清醒的头脑来执行命令。

《柯林斯英汉双解大词典》

It's OK for a nurse to be afraid as long as she has a clear head.

护士只要头脑保持清醒，就算觉得害怕也没关系。

youdao

He's got it all: talent, passion, zeal, a clear head -- and he hates to lose.

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At a time like this, Vietnam needs a brave man with a clear head more than ever.

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"It felt great being on the pitch with a clear head, " he said.

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