膨胀是使宇宙变得平坦、均匀和各向同性的机制。
Inflation is the mechanism that can make the universe flat, homogeneous, and isotropic.
Safety production is a red line that must never be relaxed at any time.
The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
我相信儿童书籍应该是美丽的物品,值得珍藏和反复阅读。