Its unique design, repeating flush and filthy removal tank have already won the patent.

它的外形设计，往复性冲洗，水箱排污功能获得三项国家专利。

youdao

Its unique design, repeating flush and filthy removal tank have already won the patent.

它的外形设计，往复性冲洗，水箱排污功能获得三项国家专利。

youdao