正如我们在上世纪70年代的石油危机后开始更加重视石油一样，如今我们必须开始从一个全新的经济视角看待水资源。
Just as we began to appreciate petroleum more after the 1970s oil crises, today we must start looking at water from a fresh economic perspective.
数字服务也可以是交互式的，允许民意测验和智力竞赛的节目，文字电视广播改良后的译本和照相视角的选择。
The digital services also will be interactive, allowing participation in polls and quiz shows, improved versions of Teletext, and a choice of camera angles on some coverage.
在第一次迭代后的每一次中，我们通过深入钻研具体功能领域(用例)来创建需求的深度视角，因而为每个迭代建立一个SRS。
During each iteration after the first, we create the depth view of requirements by doing deep dives into specific functional areas (use cases), thus building an SRS for each iteration.
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