对煤炭的战争就是对美国工人的战争。
Kindness can be a revolutionary act in a world that often rewards selfishness.
The language of mathematics is universal, transcending cultural and linguistic barriers.
系外行星研究的未来在于开发更灵敏的仪器和全球科学家的合作。
You must be filled with expectancy. You must be awash in hope.
检验一个经济学家是否优秀的标准,是看他能否比别人更好地解释过去。
公众在得到之前并不知道自己想要什么。