Isotopes have the same chemical identity but different nuclear properties.

同位素有相同的化学特性,但是原子属性不同。

麻省理工公开课 - 固态化学导论课程节选

We've distinguished three different views as to the secret or key to personal identity across time.

我们陆续已经辨别了三种不同的,关于个人认同感关键的理论观点。

耶鲁公开课 - 死亡课程节选