The shale revolution has transformed the U.S. into a global energy leader.
想要画成方形或圆形就要遵循圆规和矩尺的法则,那么万事的功效就能显现出来。
每当我们教孩子一些东西时,我们就阻止了他自己去发明它。
"There is nothing more terrifying than the absence of magic."