如果你不喜欢这辆车，你只需退货并从头再来，因为直到你亲自签署文件，交易才算完成。

If you don't like it, you can simply return it and start all over again, since the deal isn't complete until you sign the paperwork in person.

youdao

If you were asking questions, like, how high does it go, but you don't ask when does it go to the highest point, then you don't have to go through the whole process of finding the time at which it turned around.

如果你想问,例如,它可以到多高,不过你并没有问它何时达到最高点,那么你不用从头到尾再来一遍,来弄清质点何时转向

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