举个例子，一些企业要求顾客下订单时要预存更多的预付款，这样他们才能有更多的现金购买原材料。
Some ask customers to make larger deposits when they place orders, for example, so that the factories can use the cash to pay for raw materials.
咨询公司有时会在签订合同的同时收取预付款，以保持正向的现金流，并将这种做法作为标准措施。
Sometimes it is also standard practice for the consulting company to collect an up-front payment upon contract signing just to assure positive cash flow.
避免活动中需要太多的预付现金。
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