重点讲解：
1. go bankrupt 破产的；倒闭的；资不抵债的；
If the firm cannot sell its products, it will go bankrupt.
如果公司的产品卖不出去，它就会倒闭mvSUuywuE8Vl2b8c。
2. default on 不履行；未支付；
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.i(oy].yMi)。
3. to begin with 最初；刚开始；
It was great to begin with but now it's difficult.
一开始非常好，但现在可就难了ZOz3#dCUce@U4H%pNnd。
4. pick up the tab (替一群人)付账，承担费用；
Pollard picked up the tab for dinner that night.
那天的晚饭是波拉德掏的钱2N#X6g6)0sE5jYK。