I couldn't speak for laughing.

我笑得说不出话来。

《牛津词典》

I speak for all 7,000 members of our organization.

我代表我们组织的全体7000名成员发言。

《柯林斯英汉双解大词典》

He said it was the job of the Church to speak for the underprivileged.

他说为弱势群体说话是教会的职责。

《柯林斯英汉双解大词典》

I speak for the return of that general feeling of agreement which makes the blessings of this union so special to us all."

VOA: special.2009.04.02

Yeats, I said, wanted to speak for and to the Irish people, as well as to explain Ireland and Irishness to an English-speaking world abroad.

我认为，叶芝，想为爱尔兰人写诗，并把爱尔兰及其民族特色,介绍给整个英语世界。

耶鲁公开课 - 现代诗歌课程节选

He couldn't speak for five minutes without cursing.

超不过五分钟就会咒骂一句

耶鲁公开课 - 心理学导论课程节选

Frequently he lets figures from the past speak for him in their own words.

ECONOMIST: Globalisation

And Emily, of course, chattered on, as if she had to speak for both of them.

NEWYORKER: Wakefield

If you get a job, don't speak for the first 48 months on the job.

WSJ: Jason Gay: 29 Rules for College Graduates