「人山人海」英文怎么说？

be packed with people 人山人海，挤满了人

The mall is packed with people. 

商场都挤满了人，人山人海呀！

I couldn't find a seat on the bus because the bus was packed with people. 

我在公车上找不到位子坐，是因为公车上挤满了人。