The key to a successful project is to manage change by clearly defining the requirements and to adapt them as needed over the solution development cycle.
成功项目的关键是通过清晰地定义需求来管理变化,并在解决方案开发周期中根据需求适应变化。
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Though methane is not as abundant as carbon dioxide, it is twenty times more potent and scientists believe that over the eons it has played a key role in spurring climate change.