behind with paying money that is owed拖欠钱款(of a competitor in a sports race or match) having a lower score or weaker performance than other competitors(赛跑或其他体育比赛中的选手)落后于其他选手的
柯林斯高阶英汉双解学习词典释义
N-PLURAL
应付欠款;(尤指)逾期债款
Arrears are amounts of money that you owe, especially regular payments that you should have made earlier.
If sums of money such as wages or taxes are paid in arrears, they are paid at the end of the period of time to which they relate, for example after a job has been done and the wages have been earned.