I take a knitting project with me everywhere, especially when I have to sit still and listen.

我去哪儿都带着一个编织的东西，尤其是当我不得不静坐聆听的时候。

youdao

I'm only brave when I have to be.

我只是在必要的时候才会勇敢。

youdao

But it will be much worse when I have to watch the race in Brazil.

当我不得不要在巴西观看比赛时，情况会更糟。

youdao

I hate when I have to live on less money.

VOA: special.2009.10.18

I think there was another key one in the mid-90s when we said: we have to go in the server business.

还有一个重要决定是在90年代中期做的,那就是进入服务器行业。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

and I want to show people's... what people do when they have nothing, when they've lost everything.

想展现人们的……想展现他们在一无所有、失去一切的时候所做的事情。

肉品市场区的作家 - SpeakingMax英语口语达人

"It doesn't mean I am not sad when I have to move, " he says.

WSJ: Sometimes, a Second Career Requires a Leap of Faith

He's the best kind of rooming partner to have: he let's me nap when I have to.

BBC: Richie Gray's Six Nations Diary

Crystal wine glasses are wonderful things, except when I have to clean them.

FORBES: Discovery: The Best Way To Clean Wine Glasses