“人海茫茫”用英语怎么翻译？

英文中其实没有这个词的，只能按你的语境进行翻译，如果你想要好的翻译，建议提供整个一句话

(with) large quantities of people

people cats and dog

1>The vast human sea <人海茫茫>
2>The huge crowd is boundless <人海茫茫>

people mountain people sea^^~