WHAT is it about "flying cars" that makes otherwise sensible engineers lose touch with reality?
是什么原因飞行汽车会使那些另类的优秀工程师远离现实？
On the economic side, reality is that there is a threshold one must cross before the reuse of some entity becomes sensible.
在经济方面，现实情况是，有一个门槛必须跨前再用一些实体成为明智的。
On the economic side, reality is that there is a threshold one must cross before the reuse of some entity becomes sensible.
在经济方面，现实情况是，有一个门槛必须跨前再用一些实体成为明智的。
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