A: So how long have you known Mary?

那你认识玛丽多久了？

youdao

Honey, how long have we been live here?

亲爱的，我们在这住了多久啦？

youdao

And how long have I been waiting, huh, Carl?

我等了多久了，嗯，卡尔？

youdao

"My poor friend," I said, "how long have you had that cough?"

VOA: special.2009.02.07

How long have you been suffering from this nightmare?

你受这种折磨有多久了？

How long课堂 - SpeakingMax英语口语达人

Boards of directors have long agonized over how much to borrow and different companies seem to have different cultures.

董事会一直被该借多少钱的问题所困扰着,不同的国家有着不同的文化

耶鲁公开课 - 金融市场课程节选

Jesse Thomas: How long have you written on technology, and specifically at The Next Web?

FORBES: Meet the Tech Blogger Who Moved to Nashville for a Nursing Job

How long have you been involved in the media yourself?

CNN: Transcripts from video deposition of Sidney Blumenthal

How long have you been employed in this capacity?

CNN: Transcripts from video deposition of Sidney Blumenthal