do one's bit

基本解释

Ok, but do you have a bigger size in green?This one's a bit small for me.
可以，但是绿色的有没有大一点的？这件对我来说小了一点。
Let's settle the matter at one stroke, not piecemeal.; Let's do this at one go, not bit by bit.
把这事一气儿解决了吧，别零敲碎打了。
《新英汉大辞典》
He meant to work in a cotton mill and do a bit of acting, but one St Patrick's night he was paid $30 for singing two songs in a club: “and I thought, by God, this is the land all right.
他做过纺织厂工人，还试着演过一些戏。有一次在圣帕特里克狂欢夜他为一家俱乐部唱了两首歌，得到了30元的酬劳：“然后我就想，拜上天所赐，我还算没来错地方。

Having said that, let's assume that we do have the slower tempo here, one--Let me play a little bit at the piano.
说完这些,假设我们运用较慢的速度,一,我还是在钢琴上弹一下
耶鲁公开课 - 聆听音乐课程节选
Okay. I had intended to give you just a little bit of a rhythmic quiz but let's just do one of these things.
好了,我想给你们,做一些小小的节奏测验,不过我们现在就做一个吧
耶鲁公开课 - 聆听音乐课程节选

Maybe you travel a lot, perhaps you simply want to see if you left the garage door open, who knows, but it seems like a view in to one's home or office is something many people want to do, but usually it's a bit too complicated.
ENGADGET: pt's How-to Fridays: Turn your PC in to an automatic "moblog" picture posting machine!