我吃午饭时你可以去游泳。

You can go swimming while I'm having lunch.

《牛津词典》

我吃午饭的时候顺便去看你。

I'll look in at lunchtime.

youdao

一天在我吃午饭的时候，办公室里的一个比我年长一点的男孩过来，安静地问我有没有带钱。

ys he was older than I came to me where I was eating my lunch and asked me on the quiet if I had any money.

youdao

So I'm not gonna give it a lot of time today because I'm gonna go to class now and study and then have lunch.

因此，我今天不会过多地谈论这一点,因为我还要上课,学习，然后吃午饭。

普林斯顿公开课 - 人性课程节选

And then usually I can go get brunch at a breakfast restaurant or something like that.

起床以后，我就会在早餐餐厅或者其他类似的地方吃一个早午饭。

I like实战 - SpeakingMax英语口语达人

I don't think I can get either Icahn--both Icahn and Schwarzman are coming to give a lecture in April, but I don't think either of them will stay for lunch, so this is only a lunch in the event.

我想伊坎不能一起参加了,四月份的客座教授是伊坎和施瓦茨曼,但我想他们都不会都留下来吃午饭,所以这是唯一一次和嘉宾共进午餐

耶鲁公开课 - 金融市场课程节选