这三个特征分别是：浪漫的自由符号、不完全的重复、趣味的卡通画。

The features are romantic freeness symbol, incomplete repletion and amusing cartoons.

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因此，你自由选择的方向,会决定符号。

So the direction, that you are free to choose determines the signs.

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不是每一个字符串都是合法的rexx符号——为限制程序库中的关键字——但是相对于大部分语言，Rexx在符号命名方面非常自由。

Not every string is valid Rexx symbol — which restricts the keys in the dictionary — but Rexx is pretty liberal about its symbol names, compared to most languages. E.g.

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At each cross-section, people are either willing to use a certain sign in a certain way or they're not.

在每一个横街面上，人们可以自由的,以自己的方式使用符号。

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Even though the signs of the enthalpy changed, and the signs of the entropy changed because it's a combination of the two that matters.

即使自由焓的符号发生变化，熵的符号也会发生变化,因为这两部分都起作用。

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So now we have a different sign for delta H and it still happens spontaneously.

现在自由焓的变化的符号不一样了,但是这个过程仍然自发的进行。

麻省理工公开课 - 热力学与动力学课程节选