The police operation was encumbered by crowds of reporters.

警方的行动被成群的记者所妨碍。

《牛津词典》

Crowds of people plodded around in yellow plastic raincoats.

一群群身穿黄色塑料雨衣的人在四下里吃力地走着。

《柯林斯英汉双解大词典》

Wherever she goes, there are crowds of people waiting to see her.

她所到之处都有成群的人等着见她。

《牛津词典》

It is hard to miss the crowds of people always gathering in one room on this floor.

VOA: special.2010.06.23

And, to be sure, there were lots of crowds in Paris were the inevitable crowds who shouted for war, which was sort of odd because Paris was increasingly a leftwing city, because the vast majority of the population of Paris were ordinary people,were workers, more about that another time when I talk about Paris.

很多巴黎民众涌上街头,个个嚷着要上战场,而这对巴黎这座逐渐左倾的城市有些令人惊奇,因为这座城市的多数人,都是平民和工人,关于这点我会在讲到巴黎时再和大家讨论

耶鲁公开课 - 1871年后的法国课程节选

to get our athletes used to competing in front of big crowds

让我们的运动员适应在众多观众面前比赛，

正准备奥运会 - SpeakingMax英语口语达人

On Sunday, crowds of protesters blocked main roads, isolating Dhaka from other parts of the country.

BBC: Clashes over Bangladesh protest leave 27 dead

Exhibition games featuring top Mexican teams have drawn crowds of up to 80, 000 in Los Angeles.

ECONOMIST: Football is slowly spreading around the globe

Police fired a number of plastic baton rounds as rival crowds of Catholics and Protestants clashed.

BBC: NI troubles dominate summit