bruise of quadriceps femoris

例句：

1. 1.He fell and scraped his knee on the pavement.
   他摔倒了，膝盖在人行道上擦伤了。
2. 2. The dog's ribs were bruised from its fall.
   狗的肋骨因为跌落而挫伤。
3. 3. A bruise can be treated with ice and rest.
   瘀伤可以通过冰敷和休息来治疗。