Theoretical physicists have thought long and hard about what goes on inside black holes and their conclusions are mind-bending to say the least.
理论物理学家已经对黑洞内究竟发生了什么探索良久，然而他们的结论可以说实在令人费解。
The years went by your Shuangbin dyed white, hard work rough palm of your hand, took care of the children in your eyes, the burden of life's bending your spine.
岁月的流逝染白了您的双鬓，辛苦的工作粗糙了您的手掌，对子女的牵挂花了您的双眼，生活的重担压弯了您的脊梁。
It is found that the grain size of the powders milled by balls with different diameters is big, the hard phase is big too and not uniform, the hardness and bending strength are also lower.
结果表明：名义尺寸相同而实际尺寸相差较大的磨球所磨出的粉体粒度大且分布不均匀，烧结体硬质相颗粒粗大且等轴性差，抗弯强度和硬度均较低。
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