生活中唯一的限制是你为自己设定的限制。
The quality of an organization's processes determines the quality of its products and services.
婚礼进行曲总是让我想起士兵上战场时演奏的音乐。
经济不平等不仅是一个道德问题,也是一个经济问题。
The laser is to attosecond physics what the telescope was to astronomy.