how long have you stayed here
你在这里呆了多久了
以上为机器翻译结果，长、整句建议使用 人工翻译 。
How long have you stayed here since you came.
自从你来这儿以来，你呆了多久了?。
youdao
How long have you stayed here since you came to China?
自从你到中国以来，你在这儿待了多久了？
Could you tell me how long you have stayed here?
能告诉我你在这里待了多久吗？
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