The price tag says $100 and you charged me for $120; how do you explain the discrepancy?

"货物标签上写的是一百美元,你向我索价一百二十美元,这个怎么解释?"

They're charging an exorbitant price for fixing the car, but they've got us over a barrel because we can't do without it.

他们修理这部汽车索价太高, 我们被逼得只好听其摆布, 因为我们不有汽车。