When demand for labour falls , firms want to hang on to them , just as they might mothball an expensive piece of machinery .
当劳动力需求降低时，公司希望像封存昂贵机械那样留住这些员工。
Moreover , since nuclear plants are cheap to operate but expensive to mothball , they are often run at full tilt even when demand for power slackens .
此外，由于运营费用低廉但封存花费甚巨，即便在核能需求增长放缓之际，核电厂通常还是会全力运行。
European electricity and natural gas prices shot up as the market braced for the double impact of germany 's decision to mothball one-third of its nuclear capacity and japan 's utilities stepped up purchases of liquefied natural gas to offset atomic power .
The world faces a glut of natural gas that will force the us to scrap plans for new import terminals and mothball much of its existing capacity , the international energy agency says .
The company on friday signalled slow progress in its search for an investor for what it sees as leading-edge technology , declaring it would begin running down its plants in germany and portugal in order to mothball them by the end of the month .
