名词
中文翻译：退位的钻头同义词
同义词：
['recessed bit', 'recessed drill bit']
例句：
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1. The engineer used a recessed bit to make the hole in the wall.
工程师使用一个退位的钻头在墙上打了一个洞。
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2. The drill bit was recessed, so it could fit more easily into the material.
这个钻头是退位的，所以它更容易进入材料中。
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3. The recessed bit allowed for a tighter fit and made the drilling process smoother.
退位的钻头使得安装更加紧密，使钻孔过程更加顺畅。