释义：1. Noun. (dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth. “Tomorrow my dentist will fit me for a crown”
1. The Journal of the Allied Dental Societies by Allied Dental Societies (U.S.) (1918)“TECHNIC OF ROOT PREPARATION AND PORCELAIN jacket crown CONSTRUCTION’ BY GEORGE A. 
独上高台望四海 手揽云月傍天飞， 落叶重重已十月 归鸟凄凄啼心扉。
简典
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独上高台望四海 手揽云月傍天飞， 落叶重重已十月 归鸟凄凄啼心扉。
