there's no point in doing something 做某事没有意义

例句：

There's no point in staring at me.

没必要盯着我看。

Notes: point作为名词可表示“要点”，there's no point表示没有意义。例：

There's no point in convincing me of the importance of this job.

劝我相信这份工作的重要性是没有意义的。