undercharge

The waiter apologized for the undercharge on our dinner bill.

服务员为我们晚餐账单上少收的钱道了歉。

用法提示：这里 undercharge 是名词，指少收的费用，作介词的宾语。

After checking the receipt, she realized there had been an undercharge.

查看收据后，她意识到有一笔少收的钱。

用法提示：undercharge 是名词，表示少收的款项，作 there had been 的主语。

The accountant discovered several undercharges in last month's invoices.

会计发现上个月的发票里有几处少收费用的地方。

用法提示：undercharges 是名词复数，指多笔少收的费用，作 discovered 的宾语。