64位CPU拥有更宽的数据总线，但是同样是这个64位CPU可以运行32位的代码，而且拥有同样宽的数据总线。
A 64bit CPU will have a wide data bus, but recall that this same 64bit CPU can run 32bit code as well and it still has the big wide data bus to move things around with.
64位CPU拥有更宽的数据总线，但是同样是这个64位CPU可以运行32位的代码，而且拥有同样宽的数据总线。
A 64bit CPU will have a wide data bus, but recall that this same 64bit CPU can run 32bit code as well and it still has the big wide data bus to move things around with.
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