In the normal course of events, clay dissolves and disappears, and any message on it is erased.

因为在一般的情况下,粘土会分崩离析,所有的信息将灰飞烟灭

耶鲁公开课 - 古希腊历史简介课程节选

Normally I couldn't do that Vdp because this term would have p dV plus V dp, but we've specified the pressure is constant, so the dp part is zero.

一般情况下我不能这么写,因为这一项会包含pdV和，但是我们已经假定压强为常数，所以包含dp的部分等于零。

麻省理工公开课 - 热力学与动力学课程节选