He was doing it all by himself.

全都是他独自一个人干的。

《柯林斯英汉双解大词典》

He would doubtless disapprove of what Kelly was doing.

他不会赞同凯利做的事。

《牛津词典》

The car was doing 90 miles an hour.

汽车以每小时90英里的速度行驶。

《牛津词典》

She said she changed her name because she did not want her parents to know what she was doing.

VOA: special.2009.10.04

I'm a little short but I was doing OK. But I did do some research when I saw this book last year.

虽然款项很少，但是我还做得不错,我去年看这本书的时候，做了些调查。

普林斯顿公开课 - 人性课程节选

So I was reading Media, and I have to write an essay about it. So that's what I was doing.

我在读与媒介有关的内容，需要写一篇有关的论文。那是我之前在做的。

沟通很重要 - SpeakingMax英语口语达人

The moment I chose to take off, I was doing yoga on a rooftop in southern San Francisco.

BBC: How I quit my job to travel: The wedding photographer

Tellme was doing some really cool stuff with multimodal right before they were bought.

FORBES: What's Craig Mundie Been Smoking?

Bill Dodwell, head of tax policy at Deloitte, said his firm was doing nothing wrong.

BBC: Ban 'insider' tax accountants from government - MPs