W: So you are not sure how long it will take to get there?

W：所以你还不能确定到机场需要多长时间吧？

youdao

W: Eric, how long will you be in China? M: I don't know.

W：Eric，你要在中国呆多久？

youdao

W: Eric, how long will you be in China? M: I don't know.

W：Eric，你要在中国呆多久？

youdao