就目前而言，这是一个术语上的而非实质性的突破。
For the moment, it is a breakthrough of terminology more than substance.
结果造成物理学在很长时期内没有实质性的突破。
The result is that physics in a very long period of time has had no substantial breakthrough.
当然，奥巴马的出席不一定会给这些国际问题的解决带来什么实质性的突破。
Obama’s presence does not promise a sudden solution to the world’s problems.
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