他可能拒绝，但问一问也无妨。

He may say no, but there's no harm in asking.

《牛津词典》

大家必须问一问自己，这个锻炼的目的是什么。

One has to ask oneself what the purpose of the exercise is.

《牛津词典》

问一问也无妨。

It does no harm to ask.

《牛津词典》

So, ask yourself frankly especially when it comes to designing your own tools and your own programs whether it's for real users to use, whether it's for your research group to use in some other field, you know, where do you even begin?

坦白讲，问一问你们自己,当你设计一个工具，一个程序时,它是否是为真实用户使用的，还是为在其他领域的,研究团队使用的，你们懂的，你从哪里开始？

哈佛公开课 - 计算机科学课程节选