Ok, the reason I'm saying this is, we have one class definition, is a cookie cutter, it's a template that's going to let us build versions of these things.
同一实例，好，我为什么要说这个的原因是，我们学习了类的定义了，这就像曲奇成型刀一样，它是个让我们建立不同版本的，这些东西的一个模板。
By means of the action of spring force, a cutter which is installed on the cutter head is tightly clung to the end surface of the template.
靠弹簧的力的作用，安装在刀盘上的切刀紧贴在模板的端面上。
By means of the action of spring force, a cutter which is installed on the cutter head is tightly clung to the end surface of the template.
靠弹簧的力的作用，安装在刀盘上的切刀紧贴在模板的端面上。
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