煤炭开采的创新不是要重新发明轮子,而是要让轮子更高效、更环保。
Man is free at the moment he wishes to be.
思想掠过我的心上,如一群野鹘飞过天空。我听见它们鼓翼之声了。
"The true measure of a man is how he treats someone who can do him absolutely no good."
Success is cool, but happiness is better.
Both incentives and punishments elicit powerful responses.