你什么时候方便与约翰·史密斯进行第一轮会谈?
What time would suit you for the first round talks with John Smith?
能告诉我咱们什么时候方便……?
Would you please tell me what time will be convenient for us to...?
你什么时候方便,就什么时候来。
So it's convenient if you wanna check and see when the next bus is coming.
用手机可以查下一趟车什么时候来,非常方便。
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