The original proposal had been mothballed years ago.
最初的建议几年前就束之高阁了。
牛津词典
...the decision to mothball the Bataan Nuclear Power Plant, for safety and political reasons...
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.
为节省资金，航天飞行计划已被束之高阁。
This is a when strengthen mothball force construction important facet.
这是加强后备力量建设的一个重要方面.
期刊摘选
Our country population is numerous, per capita has farmland amount low, and mothball resource lack.
我国人口众多, 人均占有耕地数量低, 且后备资源缺乏.
期刊摘选