只有你自己知道自己的真实水平。

Only you truly know what is realistic for you.

youdao

只有你自己知道，什么东西对你最好。

Only you know what is best for you.

youdao

了解你自己，只有你自己知道什么东西令你睡不着。

Know yourself. Only you can know what does and does not keep you awake at night.

youdao

That's the only time you're going to find out.

只有这个时候你才知道自己是否真正理解了

耶鲁公开课 - 基础物理课程节选

It's a comedy that you only get once you performed and once you know what's happening, and

这种喜剧只有你自己明白，只有你自己知道发生了什么，

街头表演很有趣 - SpeakingMax英语口语达人