Worn out coins are taken out of circulation and replaced with new coins.

破旧的硬币不再流通，并换上新硬币。

So many lives were taken because of it that it was permanently taken out of circulation by the phone company.

由于它夺走了如此多的生命，以至于它被电话公司永久地停止流通。

Sometimes coins have been taken out of circulation and melted down not because they are worn out, but because they are defaced.

有时硬币不再流通并熔化不是因为它们磨损了，而是因为它们被污损了。