The packing is a merchandise toward the ego display of the customer, the industry have become the consumer judgment merchandise quantity good and bad precondition.

包装是商品向顾客的自我展现，业已成为消费者判断商品质量优劣的先决条件。

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In order to relate turning these physical knobs to this quantity, which we don't have a very good feel for, we've got to have a feel for the slopes.

为了把这些物理量同我们不是很理解的这个量联系起来，我们必须对斜率有一定的了解。

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Whenthe price is such that the quantity supplied of a good or service exceeds the quantity demanded, some sellersare unable to sell because fewer units are purchased than are offered.

当价格水平过高，商品或服务的供给数量将超过需求数量，一些卖家将无法卖掉商品，因为需求的数量小于供给的商品数量。

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He had a famous phrase to express this idea, "The quantity of pleasure being equal, pushpin is as good as poetry."

他有一句名言表达此观点，只要快乐的总量相等，针戏与诗一样好“

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OK, but in order to relate turning these physical knob to this quantity here, which we don't have a very good feel for, we've got to have a feel for the slopes.

热量是怎么进一步改变的,但是为了把这些物量同我们，不是很理解的焓联系起来，我们对微分已经有了一定的了解。

麻省理工公开课 - 热力学与动力学课程节选