In the realm of algorithms, efficiency is not merely a measure of speed, but a profound statement about the nature of the problem itself.
Give the pupils something to do, not something to learn; and the doing is of such a nature as to demand thinking; learning naturally results.
The integration of primary, secondary and tertiary industries is the key to modern agriculture.
世界是一面镜子,反映出我们选择看到的东西。
The best investment you can make is in yourself.