从30英尺外看，她看起来很有档次。从10英尺外看，她看起来像是为了从30英尺外看而打扮的。
From 30 feet away she looked like a lot of class. From 10 feet away she looked like something made up to be seen from 30 feet away.
电子并非一个简单不可分割的实体，而是一个复杂系统，其行为只能通过量子力学定律来理解。
用户的需求是我们前进的动力。