虽然贝尔斯登还没有确认持有的是哪一类衍生证券，我们可以从这些基金几个月前致客户的信函中窥得一些特点。

Although Bear Stearns has not yet admitted which versions of these derivatives it held, one can glean some characteristics from letters the funds sent to investors months ago.

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每年，审计人员常常会从其客户银行处索要信函以保证他们将对普通商业行为更新放贷业务。

Each year, auditors will often seek letters from their clients' bankers reassuring them that they will renew lending facilities in the ordinary course of business.

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以外出销售、电话联络和信函等方式与所辖区客户保持高度联系。

Go out the way such as sales letter, sales call, and to maintain relationships with customers by jurisdiction.

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