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Linch:
Finally you've appeared! 
你总算来拉！
Xu:
I am sorry for being late but something urgent happened.
对不起我迟到了，发生了一些急事。
Linch:
You see I have cooled my heels waiting for you.
你看我等你等的我的腿都麻木了。
Xu:
Do you feel cold?
你冷吗？
Linch:
I mean I have waited for nearly two hours!
我的意思是我等你都快到两个小时了。
Xu:
I'm terribly sorry.
我太抱歉了。