单词：dens
n a hiding place; usually a remote place used by outlaws
n a unit of 8 to 10 cub scouts
n a room that is comfortable and secluded
dens的用法和样例：
例句
- Dens evaginatus is a developmental anomaly that produces a tubercle on the occlusal surface of a tooth.齿外齿是一种牙齿发育的异常，在牙齿的咬合面上突起一个的结节，最常见于下颚小臼齿。
词汇搭配
- dens permanens恒牙
- dens lateralis侧齿
- dens caninus尖牙, 犬齿
- dens serotinus迟牙,智牙
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