I'd love to be able to help you but I can't do anything because there's someone with me.

我很希望帮助你们，却完全无能为力。因为有人和我同行。

youdao

I am happy when I play, but I can't do anything about this, so I have to sit back and bear it.

在这踢球我很快乐，但是对禁赛我无能为力。所以，我也只能坐在一旁，忍受禁赛。

youdao

When I was racing Motor Cross, I saw people doing stunts especially in Video from the US, then I get interested, but I can't do anything until when I was 18 when I bought my 1st Road bike.

当我在参加越野摩托车比赛的时候，我在录像在看到美国车手做的非常特别的特技表演，我就对这项运动产生了兴趣，直到我18岁买了第一台公路摩托车，才开始我的特技生涯。

youdao

.. We've done a lot-- I shouldn't say we haven't done anything-- but we can do a lot more.

我们做了很多-,我不该说我们什么都没做-,但是我们可以本做得更好。

耶鲁公开课 - 金融市场课程节选

Today, I'm gonna start writing C code with you but I can't just write it and expect it to do anything.

现在，我和大家一起写C语言代码,但我不指望写出来后就能跑起来。

哈佛公开课 - 计算机科学课程节选

But I'm not gonna get all worked up about what I can't do anything about.

ECONOMIST: The Mexican border

But if I can't stress anything, do your homework before you come in and sit down at an auction.

NPR: Housing Auctions Surge as Foreclosures Mount

After that you can't do anything for three days, but slowly and surely I am getting back into it.

BBC: Martyn Williams column