n.粉刺；痤瘡
Acne is the most common skin disorder in the United States. 在美國(guó)，粉刺是最常見的皮膚病。
Acne is not caused by poor hygiene and it isn't infectious . 粉刺并不因?yàn)樾l(wèi)生條件差引起，也不具有傳染性。
Many adults also have some acne easily. 成年人也很容易得痤瘡。
