1N-COUNT 樟脑丸;卫生球 A mothball is a small ball made of a special chemical, which you can put among clothes or blankets in order to keep moths away. 樟脑丸;卫生球
2VERB 把(计划、设备等)束之高阁,暂停 If someone in authority mothballs a plan, factory, or piece of equipment, they decide to stop developing or using it, perhaps temporarily. 把(计划、设备等)束之高阁,暂停 [journalism]
...the decision to mothball the Bataan Nuclear Power Plant, for safety and political reasons. [VERB noun]
出于安全和政治原因,暂时关闭巴丹核电厂的决定
The shuttle programme has now been mothballed to save money. [VERB noun]