司机在楼下等你们 英文怎么说？

The driver is waiting for you downstairs
直接用downstairs就行，国外都这么说，本身就是形容在楼下

the driver is waiting for you in the downstairs.

司机在楼下等你们 : The driver is waiting for you all at downstairs.

the driver is waiting for you downstairs

The driver is waiting for u downstairs.

tge

the car`s waiting dwnstairs