名词
中文翻译：牙冠同义词
同义词：
['tooth crown', 'crowning tooth']
例句：
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1. Thedentist carefully removed the crown of the tooth.
牙医小心翼翼地取下了这颗牙齿的牙冠。
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2. The crown of the tooth wasso worn that it could no longer beseen clearly.
这颗牙齿的牙冠磨损得如此严重，以至于已经无法清晰地看到了。
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3. The crown of the tooth is madeof a material that is strong and durable.
这颗牙齿的牙冠是由一种既坚固又耐用的材料制成的。