愉快是健康的最佳促进者,对心灵和身体同样友好。
Cheerfulness is the best promoter of health and is as friendly to the mind as to the body.
过去总是紧张的,而未来是完美的。
You may not realize it when it happens, but a kick in the teeth may be the best thing in the world for you.
"A key insight in computational learning theory is that the complexity of a learning problem is determined by the complexity of the hypothesis space and the amount of data available."