Now, I know you've had all this bonding in the orientation period, but I think that it's much better when you write a test for there to be some solid state defects known as vacancies in between the various people.

现在，我知道你们关系很融洽,在互相介绍的时间里，但是我想这样会更好,当你们在一起做一个测试,成为固体化学的不良产品,成为众多人当中的缺位。

麻省理工公开课 - 固态化学导论课程节选

Consequently, for this object the position y, at any time t is known to be 15+10t-5t^.

因此,对这个物体来说,在任意时刻的位移y,就应该为15+10t-5t^

耶鲁公开课 - 基础物理课程节选