用户可以修改预算的数目。
大多数项目，包括设计或修改网站，都要处理时间、预算和资源等方面的限制。
Most projects, including designing or revising Web sites, have to deal with constraints of time, budget, and resources.
任何对于项目假设进行的修改都很可能会影响项目时间表和预算；使客户意识到这一点并明白表述将省去日后的大量麻烦。
Any changes to the project assumptions will most likely affect the project schedule and budget; making the customer aware of this reality and stating it explicitly will save a lot of trouble later.
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