Waterfall process: a sequential design process, used in software development processes, in which progress is seen as flowing steadily downwards (like a waterfall) through the phases of conception, initiation, analysis, design, construction, testing, production/implementation and maintenance.
瀑布过程：一个顺序设计过程，用于软件开发过程，其中进展被视为在概念，启动，分析，设计，构造，测试，生产/实施和维护阶段稳定地向下流动（如瀑布）。
