两百万人用英语怎么说

"Two million people" in English is commonly expressed as "two million" without "people".

It comes from the standard numbering system in English, where large numbers are expressed in the form of "number + million/billion/trillion etc".

Example sentences in English:

The city has a population of two million.
Approximately two million tourists visit the country every year.

Example sentence translations:

该城市的人口为200万。
每年大约有200万游客到该国旅游。