mothball
noun uk/ˈmɒθ.bɔːl/ us/ˈmɑːθ.bɑːl/
樟脑球（一种白色小球，含有化学成分，有强烈气味，可防止蛾子接近衣物）
a small, white ball containing a chemical with a strong smell that keeps moths away from clothes
I've inherited a vintage fur coat, but it smells like mothballs.
The camphor in mothballs damages natural skins.
mothball
verb [ T ] uk/ˈmɒθ.bɔːl/ us/ˈmɑːθ.bɑːl/
封存，保藏;把…束之高阁
to stop work on an idea, plan, or job, but leaving it in such a way that you can start on it again at some point in the future
Six coal mines were mothballed in the hope that they could be reopened in a time of better economic conditions. 六个煤矿暂被封存，希望在经济形势转好的时候可以重开。