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节约大便器冲洗水的问题早已引起了人们的重视,并已研制出了各种类型的节水器,但到目前为止,这些节水器还只是注重于节约
The problem of saving stool flushing water has long attracted people’s attention, and various types of water-saving devices have been developed, but so far these water-saving devices have only focused on saving.