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1·You can then sell the warrant for a windfall profit.

认股权证通常与债券一起附带发行；

2·If the market offers you a windfall profit on a trade, lock it in!

如果市场给了你意料之外的暴利，锁定它！

3·Banking analyst Dick Bove of Rochedale Securities said in a note yesterday that buying some or all of MF Global might create a windfall profit for Goldman.

罗奇代尔证券（Rochedale Securities）的银行业分析师博韦昨天在一份报告中称，购买明富环球部分或全部资产有可能为高盛集团创造出一笔“意外收益”。

4·My friend didn't care because every sale that they generated was pure windfall profit for my friend - and, of course, my friend also got 100%, of the back end.

我的朋友也不介意，因为他们为他创造的全是额外收入，当然我的朋友获得了后端的100%。