过去永远不会离开我们；我们把它藏在眼神和声音里。

中西医结合是医学发展的未来方向

The heart of the educator must be a living flame, a fire that can ignite the souls of the young.

If you start out by promising what you don't even have yet, you'll lose your desire to work toward getting it.

化学中的每一个发现都是向自然真理迈进的一步。