When a professor insists computer science is X but not Y, have compassion for his graduate students.
海洋将我们所有人联系在一起;它的挑战需要全球解决方案。
声音是一种天赋,但也是你每天必须努力练习的东西。
试管婴儿的未来是使其更简单、更安全、更易于获得。