non-piped water supply 非管道供水
Even if a piped water supply is safe at its source, it is not always safe by the time it reaches the tap.
即使管道供水系统在水源处安全的，等水到达龙头时就不一定总是安全的了。
To supply outdoor plantations, rivers are dammed and water piped as far as two miles.
为了提供户外种植的供水，河流中建起了水坝并且水管连绵2公里。
It takes power to gather water, purify water, and distribute water, especially in places like southern California where water is piped hundreds of miles to supply Los Angeles' sprawling demands.
收集水、净化水和分配水都需要能源消耗，特别在好像南加州那样有广阔需求的地方，需要通过几百公里管道运输水到洛杉矶。
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