这就是我一直奉行的生活原则- - - - - -不担心未来的事，也不为下一刻发生的事操心。

And so I have tried to follow that out-and not to worry about the future or what was going to happen.

youdao

我儿子可以确信我会带他去看球赛，他当然不必担心给车加油，不操心去赛场的方向，而且不用担心怎么开车去。

My son can be certain I will get him to the ball game, but he need not be concerned about the gas required, the directions there, or even to drive.

youdao

我不希望浪费我的时间和精神去为此而操心。

True. I don't want to spend my time and energy fretting about that.

youdao

This is something that you're going to prove in statistical mechanics, and so we're not going to worry about where this comes from.

我们会在统计力学中,证明这一结论，现在不需要去,操心这一结论的由来。

麻省理工公开课 - 热力学与动力学课程节选