银河系中心是强引力下的一个独特的自然实验。
煤炭行业的遗产将由我们今天的行动决定。
The more determinedly I exist, as myself, within the conditions of the time, the more clearly I shall hear the language of the past, the nearer I shall feel the breath of universal history.
思索寓含着判断，我们都那么偏执，以至会做出否定的判断，所以在卧室时，我们总是心存疑虑。
The health of our oceans is directly linked to the health of our planet.