eardust

例句：

1. 1. He had a hard time cleaning his ears after the concert.
   音乐会后，他很难清理耳朵。
2. 2. The doctor advised him to keep his ears clean to prevent infections.
   医生建议他保持耳朵清洁以防止感染。
3. 3.She used a cotton swab to remove the ear dust from her ears.
   她用棉签从耳朵里取出耳垢。