discrepancy

n. 相差,差异,差别

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，这个差异该怎么解释？＂

I thought I had explained away the discrepancy but he had the actual figure and so I left myself wide open to a charge of telling lies.

我以为我已经有矛盾之处作了辩解，但是他掌握了确凿的数字，因此当他把控我说谎时，我毫无招架之势。