根据程度不同，信息所显示的符号也不同(一个蓝色圆圈，一个黄色三角形，或者中间带一横杠的红色圆圈)。

Depending on the severity, a different symbol is shown for the message (a blue circle, a yellow triangle, or a red circle with a cross inside).

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当时我心一横，“反正现在再改也来不及了！”

Well, I thought, "It is too late to change."

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上面的一横表示天，下面的方框表示云，中间的点表示雨滴。

The horizontal strike above represents the sky, the square below represents the cloud and the dots in between represent raindrops.

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So I can make a quantity that I'll call V bar, which is the molar volume, the volume of one mole of a component in my system, and that becomes an intensive quantity.

所以我可以定义，一个叫做一横的量，这是摩尔体积系统中,一摩尔某种组分的体积，它就变成了。

麻省理工公开课 - 热力学与动力学课程节选

I'm going to put a little bar right here.

这一横表示。

麻省理工公开课 - 热力学与动力学课程节选

Now I'm going to add a little thing here.

注意我们需要在这上面加上一横。

麻省理工公开课 - 热力学与动力学课程节选