It is the most dangerous part of the route, very steep, and this kind of stones are very easy to be broken, if not be careful, people will fall down easily.

这是最危险的路段，非常陡峭，而且这种质地的石头很容易断裂，如果不小心，就很容易摔下来。

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If you are not careful, this can be the lifetime of your program — such as when you place an object in a global collection.

如果不小心，那么它可能就与程序的生命周期一样——如果将一个对象放入一个全局集合中的话。

youdao

If you have to deal with large institutions, be careful not to make waves.

如果定要和大的机构打交道，把握好分寸，不要惹事生非。

youdao

If you're not careful this is going to be like one of those horror stories,right?

如果你不小心,这会像是那种恐怖电影？

耶鲁公开课 - 死亡课程节选

Even though we have a noun, the smile, that if you're not careful might lull you into thinking there must be a thing, the smile.

即使我们有笑容这个名词,如果你不够谨慎,可能会想当然地认为,一定存在着笑容这一事物

耶鲁公开课 - 死亡课程节选

And if Netflix is not careful it will be killed off too.

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His defenders cite it as another example of how anyone can be labelled a harasser if not careful.

BBC: Herman Cain, Clarence Thomas, and sexual harassment

And if Intel is not careful, it will be surpassed by a once-fallen rival such as NVIDIA, which is making a resurgence.

FORBES: Intel's Still One of the Cheapest Stocks on the Market