dark reactivation的用法和樣例：
例句
- Herpes zoster oticus is the most common form of reactivation of varicella zoster virus in the head and neck area.
摘要耳帶狀皰疹是潛伏在頭頸部的水痘帶狀皰疹病毒活化複發時產生帶狀皰疹最常見的情形。 - Every four weeks, reactivation of coil spring is performed and ulceration of oral mucosa is recorded.
每隔四周檢查及活化彈簧一次，並紀錄口腔組織有無潰瘍現象。
