20秒记一个英语单词：default

default 英 [dɪˈfɔ:lt] 未履行任务或责任，拖欠;

英文释义：

failure to do sth that must be done by law, especially paying a debt

双语例句：

The credit card business is down, and more borrowers are defaulting on loans.

信用卡业务出现了下滑，而且越来越多的借款者都不按期还款。

The corporation may be charged with default on its contract with the government.

该公司可能会因未履行与政府签订的合同而受到控告。