每首歌都有自己的个性。
The task of the teacher is to lead the student from the known to the unknown.
The advancement of mathematics is through the continuous questioning of established truths.
在弦理论的早期,我们就像是在绘制未知大陆的地图的探险家。
遗传密码的美在于它的普遍性;它被所有已知的生命形式共享。