1. She had a noticeable diastema, which gave her smile a unique charm.
她有一个明显的牙齿间隙，因此她的微笑显得独特迷人。
2. Some people choose to have corrective orthodontic treatment to close their diastema.
一些人选择进行矫正牙齿的治疗来关闭他们的间隙。