为了方便练习，让我们叫它“平静”。
And for the purposes of this exercise, let's call it "Quiet."
这里面的每个零件都是艺术家信手拈来的——幸亏他给了作品相对完整的外形，让我们知道它叫小提琴。
Every part in this item comes together occasionally by artists-Fortunately he gives this artwork a complete figure, so that we can tell it is a violin.
前人们所做的就是他们说让我们确定，一个能量单位用来代表一单位电荷，加速穿过形成的一单位电势差，我们叫它电子伏特。
What people did is they said let's define a unit of energy that represents a unit charge accelerated across a unit potential difference, and let's call that the electron volt.
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