Cover the items in plastic once they reach the right "critical temperature" for storage.

VOA: special.2009.11.30

All right, so that's what we're going to cover in terms of the energy portion of the Schrodinger equation.

好，这就是我们要讲的,关于薛定谔方程能量的部分。

麻省理工公开课 - 化学原理课程节选

So right in the packaging of this novel that we have today this cover has changed over time nevertheless, even today, that very Catholic iconography is right on the front of the cover.

所以对于我们的这本书,虽然封面随着时间一直在改变,但是即使是今天，天主教的肖像画依然,出现在了封面的中央。

耶鲁公开课 - 1945年后的美国小说课程节选