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fall behind 英 [fɔ:l biˈhaind] 　美 [fɔl bɪˈhaɪnd]

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fall behind

phrase. 拖欠；落在后面　

If you fall behind with the rent,you will be asked to leave.　你要是拖欠房租，叫你立即走人。

They charge lower upfront fees than other cards do. But if you fall behind, it's tough.　他们比其他卡收取的预支费要低，但是如果你拖欠还款，那就日子艰难了。

1. If you fall behind with the rent,you will be asked to leave.

你要是拖欠房租，叫你立即走人。
2. They charge lower upfront fees than other cards do. But if you fall behind, it's tough.

他们比其他卡收取的预支费要低，但是如果你拖欠还款，那就日子艰难了。
3. For American Express, having “bad” customers —people who frequently fall behind in their payments, or who don’t use their accounts —was impeding its ability to seek and serve the more lucrative ones.

对美运通来说，那些信誉不好的顾客--经常拖欠付款，或者不用帐户的客户---正阻碍了公司为寻求更具盈利能力的群体服务的需求。