So this idiom means to provide something that will be of benefit. Something useful.

这个习语的意思是提供一些有意义的，有用的东西。

If it's of benefit, I'll be here for as long as they'll have me.

如果我还能起到一点作用，他们让我待多久，我就待多久。

And as a consequence, we can do all kinds of interesting things that are of benefit for human health.

因此，我们可以做各种各样对人类健康有益的有趣的事情。

He could have, been of benefit to Paul.

他本可以对保罗有益。

Recognition of many of the facts that we are discussing this evening will be of benefit in your psychological time experiences.

认识到我们今晚所讨论的许多事实，对你们的心理时间实验将是有益的。

This of course is a lie — I do not like lies — but in this case I think it will be of benefit.

当然 这是个谎言——我不喜欢撒谎——但在目前这种情况下，撒撒小慌是合理有利的。

If such writing is sharply as well as humanely done, it will be compelling to readers, and may even be of benefit to its subjects.

如果这样的写作既犀利又人性化，它就会吸引读者， 甚至可能对它的主题有益。

But think about e-cigarettes in a properly regulated marketplace as something that could be of benefit to addicted adult cigarette smokers who are trying to transition away from cigarettes.

但是，请将电子烟放在一个受到适当监管的市场中，将其视为可能对试图摆脱香烟的成年吸烟者有益的东西。