公司开始开展业务已经多久了？

How long have you been in business?

youdao

医生：你得这病已经多久了？

Doctor: How long have you been ill?

youdao

你患关节炎已经多久了？

How long have you suffered from arthritis?

youdao

It used to be the case-- I forget how long drive-in windows have been around, certainly as long as you guys can remember-- but there was a time when drive-in windows didn't exist.

曾经是这样的情况,我忘了免下车餐厅已经出现多久了,当然可能自打你们记事时就出现了,但是在免下车餐厅尚未出现的时候

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选