The earth is a dot. The moon is a dot. The sun is a dot. The stars are dots.

The evidence seems to favor the view that the fundamental structure of the virus is a hollow tube.

译文：读书人读书，第一要有志向，第二要有见识，第三要有恒心。有了志向就不会甘心处于平庸的地位;有了见识就知道学问是没有尽头的，不敢因为有了一点收获就自我满足;有了恒心就绝对没有办不成的事情。这三种品质缺一不可。