如果不是参观了自来水厂,如果不是亲眼看到那么多的车间、仪器、设备和程序,如果不是被轰隆隆的机器震得发晕,我绝对想不到普普通通的自来水,竟然如此来之不易。星期四的下午,大客车把我们送到了黑虎山自来水厂的大门口。负责讲解的阿姨带我们穿过一片茂密的树林,来到了水厂的反应池边。阿姨告诉我们,水厂先把淮河里的水抽到这些 If not for a visit to the waterworks, if not for the first time I saw so many workshops, equipment, equipment and procedures, if not by the rumbling machine was shocked, I absolutely can not think of ordinary water, even so hard-won. On the afternoon of Thursday, the bus took us to the gate of the Black Tiger Waterworks. Aunt responsible for explaining us through a dense woods, came to the water pool side of the reaction. The aunt told us that the water plant should draw the water from the Huaihe River first