1·Existing fossil fuel stations are "mothballed" for use only as a last resort.
现有的矿物燃料发电站被“封存”，仅在万不得已时使用。
2·Ironically, now there will be a hiatus as the space shuttle is mothballed next year. Instead of fast and cheap access to space, for five years we will have no access to space at all.
具有讽刺意味的是，由于航天飞机明年将被封存，为了寻找一种快速廉价进入太空的方式，今后五年时间里我们根本无法进入太空。
3·Steel plants have since been sold, mothballed or slated for closure, in part because Europe's economy is so weak.
自钢铁厂自被卖掉以来，封存搁置或者停止接受预定，部分是因为欧洲的经济太过脆弱。