You should try to have a good relationship with your neighbors, because you never know when you may need their help.

你应该努力与你的邻居保持良好的关系，因为你永远不知道什么时候会需要他们的帮助。

youdao

I cried because you never know if you'll have another chance to win.

我哭了，因为你永远不知道你是否还有机会获得胜利。

youdao

And you might as well have fun because you never know, you might die tomorrow.

那样你也会快乐，因为你永远不会知道明天你就可能会死去。

youdao

So I've never felt like a minority because,as you know, minorities are never supposed to say anything unkind about one another."

VOA: special.2010.08.08

This complicates finance because it means that you never know.

这困扰着金融界,你无法预料

耶鲁公开课 - 金融市场课程节选

and because... you know, never before have we seen this level of interconnectedness

这种水平的互联性是我们之前从未想过的，

关于全球化 - SpeakingMax英语口语达人

Because you never know: This might be the year that nature takes a sabbatical.

NPR: Morel Satisfaction: Stalking the Wild Mushroom

Life becomes a waiting room: hushed but unpeaceful, because you never know when you will be called.

NEWYORKER: Bringing Up Babies

Because you never know who someone else may be connected too that could make for a top-notch candidate.

FORBES: The Benefits Of Social Media Beyond Marketing