到处旅行，却没有冲水马桶。
你可以看看人们在没有冲水马桶和自来水之前是怎样生活的。
You could see how folks lived before flush toilets and running water.
关于冲水马桶究竟是谁发明的一直都众说纷纭，而真相永远只有一个。
There is disagreement over who was the inventor of the modern flush toilet, and flushing out the truth is not easy.
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