He was careful not to celebrate prematurely.

他很谨慎，没有过早地举行庆祝活动。

《柯林斯英汉双解大词典》

She kissed me, careful not to smudge me with her fresh lipstick.

她亲吻了我，小心翼翼地不让她新抹的唇膏弄脏我。

《柯林斯英汉双解大词典》

She was careful not to let her control slip.

她小心翼翼，不让自己失控。

《牛津词典》

Just be careful not to let the cat out of the bag, or someone may leave you holding the bag.

VOA: special.2009.01.25

Of course again we've got to be careful not to misunderstand what's being said.

当然我们还是要小心,不要弄混问题。

耶鲁公开课 - 死亡课程节选

I think that we should be very careful not to let that deflect us from the recognition that this is important technology and that it's not the technology that's at fault; we have to get it right and then it will be powerful.

但我认为,我们应该警惕,不要因此对金融产生误解,事实上金融是门重要的应用技术,而且这一切并不是科技本身的错,我们应该完善这项技术,使其发挥正面作用

耶鲁公开课 - 金融市场课程节选

At the bottom, Mr Cameron encountered incredibly fine silt, which he had to be careful not to disturb.

BBC: James Cameron back on surface after deepest ocean dive

But we ought to be careful not to vilify this profession while doing so.

CNN: The courage of teachers

Of course, you should be careful not to overly rely on e-mail and the phone.

FORBES: Is This Meeting Necessary?