费德斯登表示：“现在摆在台面上唯一的问题在如此短的时期内，将要废除的税减政策该何去何从，而不是再制定一些华而不实的其他政策。”
“The only issue on the table with a very short amount of time is what to do with the expiring tax cuts, ” Feldsein says, “not what more general policy might be adopted.”
有一种方法可以表示这种关系，即创建一个名为Motorized的接口，Automobile和Bus都实现这个接口，但是RowBoat不实现。
One way of representing relationships like this is to create an interface, Motorized, which Automobile and Bus would implement, but RowBoat would not.
将一个DICOMData对象表示为一大行几乎为空的数据元素既不实际，也不可能。
Representing a DICOMData object as one large row of mostly empty data elements is not practical or even possible.
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