轻轻地将耳廓向上拉直，使用注射器直接向耳孔壁注水。
Gently pull upward to straighten the ear canal. Use a syringe device to gently direct water against the wall of the ear canal.
轻轻地将耳廓向上拉直，使用注射器直接向耳孔壁注水。
Gently pull upward to straighten the ear canal. Use a syringe device to gently direct water against the wall of the ear canal.
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