How long have you been here?

你来这多久了？

youdao

TED: How long have you been here in Sydney?

泰德：你在悉尼呆了多久了？

youdao

How long have you been here? For two days.

你到这里多久了？两天吧。

youdao

How long have you been here?

你在这里多久了？

与圣地亚哥不一样 - SpeakingMax英语口语达人

How long have you been standing here?

你在这儿站了多久了？

How long实战 - SpeakingMax英语口语达人