以下为句子列表：
英文: The teeth located between the cuspids and the molars, having either two or three cusps. The bicuspids are numbered 4, 5, 12, 13,20,21,28 &29. Also known as Premolars.
中文: 位于尖牙和磨牙(臼齿)之间的牙,所有双尖牙都有两个或三个牙尖.双尖牙被编号为4,5,12,13,20,21,28和29.也被称为前磨牙(臼齿).
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