Teeth gnashing的用法和樣例：
例句
- Surano says the strain of posing for the painting could have triggered an attack of teeth grinding.
蘇然諾認為為了作畫而保持姿勢不變可能引起了磨牙症的發作。 - Bruxism is a disorder characterized by grinding and clenching of the teeth, companied with fasciculation of masticatory muscles in nonfunctional status.
磨牙症是在非功能狀態下咀嚼肌發生自發性收縮，使上下牙彼此磨動或緊咬的現象。
