scar over的用法和樣例：
例句
用作動詞 (v.)
- The cut healed up without leaving a scar.
傷口癒合沒留下疤痕。 - The wound in his arm would take weeks to heal over.
他手臂上的傷要幾個星期才能癒合。 - The doctor will put some stitches in that cut to prevent it from scarring over.
醫生會把那個傷口縫幾針以免結疤。 - The findings showed that in the heavy axle surface scar formation concerns with the production of the crack formation and the decarburization.
研究結果顯示，重軌表面結疤的形成與生產中裂紋的形成和脫碳有關，裂紋形成后，在生產過程中發生氧化而形成氧化原點和脫碳是導致結疤形成的主要原因。
