名词
中文翻译：王冠钻头
同义词：
['crown bit', 'crown drill bit例句：1. The crown drill was used to drill holes in the crown of the tree.（使用皇冠钻头在树冠上钻孔。）']
例句：
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1. The crown drill was used to drill holes in the crown of the tree.
使用皇冠钻头在树冠上钻孔。
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2.He used a crown drill to remove the old crown from the tree.
他用皇冠钻头从树上取下旧的树冠。
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3.The crown drill bit was the most effective tool for removing the old crown.
皇冠钻头是最有效的工具，用于去除旧的树冠。