理智在这方面也不管用。

Also, the intellect does not avail it to us.

youdao

当你的相机系统崩溃时，当高尖端的技术也不管用时，该怎么办？

What happens when your systems go belly-up, when all of that cutting-edge technology dies and you must rely on gasp!

youdao

不幸的是，虽然这样可以通过编译，但是这种方法也不管用，其原因较为微妙。

Unfortunately, although it compiles, this approach doesn't work either, for reasons that are more subtle.

youdao

take the derivative of this, get the velocity vector and you notice his magnitude is a constant Whichever way you do it, you can then rewrite this as v square over r.

对这个式子求一次导,就能得到速度矢量,你会发现其模长是常数,不管用什么方法,加速度也可以写成 v^2 / r

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