A similar phrase is " to leave (or let) someone alone" .

类似的短语是“让（或让）某人独自一人”。

But traditionally, " to let someone alone" would mean to not bother the person and " to leave someone alone" would mean to make sure the person is by himself without anyone else there with him.

但传统上，“让某人独自一人”意味着不打扰这个人， 而“让某人一个人呆着” 意味着确保这个人独自一人， 没有其他人在他身边。

In more recent English – in the last 40,50 years, I suppose – people have started using the expression " to leave someone alone" to mean the same as " to let someone alone," meaning to not bother someone.

在最近的英语中——我想是在过去的 40,50 年里——人们开始使用“to leave someone alone” 这个表达与“to let someone alone” 的意思相同， 意思是不打扰某人。