Data reveals the truth: Most poor people are not lazy.
In the depth of the valley is the road to salvation.
La historia de América es una realidad tan desmesurada que parece inventada.
I prefer to count the stars rather than to laugh at them.
效率是以正确的方式做事,而效能则是做正确的事。
2004年9月13日,81岁的杨振宁在清华大学开始为本科生讲授普通物理。他说