Let's begin with a kind of warm-up sheet which we can anchor in these little drawings I've made.

让我们先来热一下身,看一下我在黑板上画的图。

耶鲁公开课 - 文学理论导论课程节选

The thermos, with the lid on top, It's not a open system your coffee is going to stay warm or hot in the thermos.

顶部盖了盖子的热水瓶，不是开系,你希望你的咖啡在热水瓶里面保持温暖,或滚烫。

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