Then we can take the derivative of that quantity, when we vary the temperature, holding the volume constant.

即恒定体积，改变温度，这里恒定温度下。

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Compounding matters is the problematic location of the power and volume buttons. Holding the device in your left hand often causes you to hit these by accident.

电源键和声音键的位置也有点问题，当你用左手拿着时很容易不小心碰到他们。

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In fact, each is like a bag of holding and can actually hold material of as much as 2 cubic feet in volume or 20 pounds in weight.

际上这两个口袋如同“次元袋”，可以容纳体积至多2立方英尺、重量至多20磅的物品。

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Then we can take the derivative of that quantity, when we vary the temperature, holding the volume constant.

即恒定体积，改变温度，这里恒定温度下。

麻省理工公开课 - 热力学与动力学课程节选

It also has the potential to be a problem for funds like Fairholme that hold a limited number of stocks (FAIRX holds just 20 stocks and seven bonds), but you need consider the average volume of each holding (aka liquidity) before viewing a concentrated portfolio as a red flag.

FORBES: Why Good Funds Can Have Bad Performances