当市场出现恐慌，投资者就会大批购买美元和美元证券。

When panic reigns, investors pour into dollars and dollar securities.

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它们循环利用各自国家的经常账户盈余，使之转换成美元证券，压低了收益率水平。

They have recycled their countries' current account surpluses into dollar securities, holding yields down.

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每天，价值数十亿美元的证券都基于一个不成文的协议而流通，即要时刻满足兑现要求。

Billions of dollars in securities are traded each day with nothing more than an implicit agreement that trading partners will pay up when asked.

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So, SIPC was set up in 1970 and SIPC insures cash accounts up to $100,000 and securities accounts up to $500,000.

证券投资者保护公司于1970年成立,其对现金账户的保护金额高达10万美元,对证券账户的保护金额高达50万

耶鲁公开课 - 金融市场课程节选

There's maybe about three trillion dollars worth of stuff backed by mortgages out there Well, as you've seen, these have produced crisis of confidence and I don't think we've heard the last of it.

现在大概有价值三万亿美元的有抵押证券,在市场上流通,就像你所看到的那样，这些证券已经导致了,市场信心的丧失，而且我个人认为这还完全没有结束。

耶鲁公开课 - 金融市场课程节选