掉落、脱落、减少或下降：指物体从原来的位置或状态中掉落、脱离或减少或下降。
脱落；落下
破裂脱落
A bolt may have fallen off the plane's forward door.
飞机前舱门的一个门闩可能脱落了。
We stop eating candies and chocolates when all of our teeth have fallen off.
当我们的牙齿全部脱落后，我们就不再吃糖果和巧克力了。
The handle had fallen off the drawer.
抽屉的拉手掉了。
His name was Arnold Parks. He caught another worker who had fallen off the top of the canyon.
VOA : special.2010.10.27
Satan has roused himself from off the burning marl, and he stands in order to call up his fallen minions, to rouse them to acts- great acts of heroism.
撒旦已经从灰土中站起身，召唤着他同样堕落了的随从们，唤醒他们实现英雄之举。
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But they're improving because imports have fallen off a cliff, not because exports are firing again.
He said he could not believe a young boy "could have vanished and fallen off the edge".
U.S. price increases are turning them off, and interest has fallen off from the Eurozone crisis countries.