Using modern astronomers' assumptions, which presuppose a flat universe, they calculated the probability that the universe was in one of three states: flat, positively curved or negatively curved.
他们采用现代天文学家的假设，假定宇宙是平坦的，计算出宇宙处于以下三种状态之一的可能性：平坦的，正向弯曲或反向弯曲。
During Soviet times a successful bureaucrat could expect to live in a good but modest three-bedroom flat, with modern furniture. He could expect holidays on the Black Sea coast.
在苏联时期，一名成功的官僚往往可以住进一间适度舒适，而且配有现代家具的三房一厅公寓，他还享有到黑海度假的假期。
Eventually, dense rows of interlocking barbs formed a flat surface: the basic blueprint of the so-called pennaceous feathers of modern birds.
最终，成行的浓密互连羽支形成了平滑表面：即现代鸟类的羽翮结构基本形成。
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