And once you start, you'll find you know almost all of the stuff anyway—it is, as I said, mostly a matter of cleaning the rust off the drillbits and sharpening the blade of your saw.
一旦开始学，你会发现其实多半内容你早就会了——就像我前面说的，很大程度上这就好比清理钻头上的锈渍，或者磨利你的锯子。
Drillbits
原声例句
史蒂芬‧金谈写作
英语百科
Drill bit
（重定向自Drillbits）
Drill bits are cutting tools used to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shape and can create different kinds of holes in many different materials. In order to create holes drill bits are attached to a drill, which powers them to cut through the workpiece, typically by rotation. The drill will grasp the upper end of a bit called the shank in the chuck.
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