t-20:to a hair 完全地
a:david is very careful about his money.
a:戴维花钱很仔细。
b:he can make use of his money.
b:一分钱也不会乱花。
a:when you go out with him, you cannot hear him.
a:和他一块出去，你会受不了的。
b:why?
b：为什么？
a:when he's spending the money, he calculates it to a hair.
a:他花钱的时候要数得分毫不差。
b:this is also the way his dad does.
b：和他爸爸一个样。
a:that's amazing.
a:真是不可思议。
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