情景剧 » Sitcoms 因为有许多节目 » Because there are many programs 我们日夜拼命工作，提前三天完成了任务 » We work very hard day and night, three days to complete the task ahead ..
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Such programs are much needed because in many arid lands there is only a vague idea of the extent of groundwater resources.
这样的计划是非常必要的，因为在许多干旱地区，我们并不清楚其地下水资源的范围。
Because most programs are long-lived (some last for decades), there many be an unlimited number of stages in a program.
因为大多数计划都是生命周期较长的(有些可以持续几十年)，因而一个计划中有许多无限量的阶段。
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