At the end of the 18th century , the flushable toilet went mainstream .
到了18世纪末，可冲洗的厕所以及成为了主流。
Contain no plastic components ; completely decomposable and flushable .
不含任何塑料成分，彻底分解和可冲。
Flushable valves , water tanks that rest on top of the bowl rather than above , toilet-paper rolls ( invented in 1890 but not heavily marketed until 1902 ) - these minor improvements seem like necessities now .
Flushable valves , water tanks that rest on top of the bowl rather than above , toilet paper rolls ( invented in 1890 but not heavily marketed until 1902 ) - these minor improvements seem like necessities now .
