- n. 卫生球(封存用)
- vt. 封存、暂停使用（仪器；计划等）
a small sphere of camphor or naphthalene used to keep moths away from stored clothing
put into long-term storage
- Decided to put the plan into mothballs.
- in mothballs 收存起来
Take the Paley Report out of mothballs, and review its recommendations.出自： A. E. Stevenson
Apollo hardware put in mothballs..could be brought out.出自：Guardian