calcar

例句：

1. 1. She was worried about thepain in her calcar.
   她担心她的臼齿疼痛。
2. 2. The dentist told him tofloss his teeth before the next appointment.
   牙医告诉他下次预约前要刷牙。
3. 3.He had a cavity filled with a compositeresin filling.
   他有一个由复合树脂填充的龋洞。