第七条律师事务所接受委托后，应当与委托人签订收费合同或者在委托合同中载明收费条款。

Article 7 After accepting the entrustment, a law firm shall conclude charging contracts with the clients or specify charging clause in the entrustment contract.

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当双方签定了一份固定投标合同（fixed bid contract）后，并逐步建立了信任，继而达成了一个更加灵活的收费方案。

Martin Fowler presents an example from a ThoughtWorks project where they went in with a fixed bid contract, built trust with the customer, and then moved to a more "flexible charging scheme".

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这个本金保证产品是一个合同，期限从3年到15年，根据一系列复杂的市场交易，保证客户的回报在一个特定的水平，银行同时也获得收费和利润。

The CGP is a contract, ranging from three to 15 years, usually guaranteeing clients a certain level of return on a complicated series of market plays, with the bank obtaining fees and profits as well.

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