当一家公司或者一个投资者想买一份衍生产品合同，例如石油或者小麦或者担保抵押，其买单是在一家银行的交易员那里。
Instead, when a company or an investor wants to buy a derivative contract for, say, oil or wheat or securitized mortgages, an order is placed with a trader at a bank.
风险投资的基础在很大程度上是相互信任，风险资本是无抵押，无担保，并且必须完全按照该合同。
Venture capital to a large extent based on mutual trust, the venture capital is no secured, no collateral, and must be fully in accordance with the contract.
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