经济学人下载:代代叠加:庞氏骗局(1)

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例句:It's common sense to dress more warmly when it gets cold.
天冷了要穿得暖一点儿，这是常识。 

2.be eager to 急于

例句:They are eager to buy their government bonds.
他们热心购买政府债券。

3.Instead of 代替

例句:Why don't you play football instead of just looking on?
你为什么不参加踢足球而只是看热闹？

4.In most cases 大多数情况下

例句:Investors can simply pay cash, but this isn't a workable solution in most cases.
投资者可以直接付现金，但这个办法在大多数情况下都不可行。