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Almost half have no indoor plumbing .

几乎一半人口没有室内管道系统。

Only once could outhouses be replaced by running water and indoor plumbing .

户外厕所被自来水和室内管道取代的机会只有一次。

Chinese courtyard houses traditionally didn 't have plumbing , so public bathhouses and toilets dotted the city .

传统的中国四合院是没有管道的，不少公共澡堂和厕所点缀在城市中。

But in china , substandard plumbing and overloaded city sewers can make all that performance feel wasted .

但是在中国，不达标的管道和负荷过重的下水道让这些功能感觉是浪费了。

Customers don 't understand plumbing , so you try to explain that you 're not ripping them off .

客户不懂水管，所以你要努力解释，告诉他们你没有骗他们的钱。