构造：号码管内部成凹型，具有弹性，内径能随着电线大小而伸缩。
Struction: the inside is hollow, but elastic, the diameter can change with the needed wire.
压凹：用不着墨的电版或模在纸上压成凹纹效果的方法。是浮雕压印的相反。
Debossing: the process of pressing a recess image using an un-inked block or die on paper or board. It is the opposite of embossing.
这种形状其实已经包含在小镇的名字当中：hoh指的就是这样形状的山脊——一边陡，一边缓，缓那边在最低处成凹状。
The name contains the shape: a hoh is a ridge that rises to a point and has a concave end.
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