人数 英语怎么说

人数的英文是 "number of people"。

这个词来源于拉丁语 "numerus"，意思是 "数字" 或 "数量"。

例句：

There were a large number of people at the concert. (演唱会有很多人。)
The number of people attending the party was smaller than expected. (参加派对的人数比预期的要少。)
The number of people in the room increased as more people arrived. (随着更多人的到来，房间里的人数增加了。)