量子电动力学的发展表明,粒子的概念并不像曾经认为的那样简单。
最成功的经营是那些动物茁壮成长、土地繁荣、人们兴旺的地方。
继续前进。
Language is a process of free creation; its laws and principles are fixed, but the manner in which the principles of generation are used is free and infinitely varied.
Every story is a journey into the unknown.