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河流污染(Polluted Rivers)
the rivers near our city have been seriously polluted recently. the clear water has gone.
　　there used to be many fishes swimming freely in it. but now they are gone. many factories in the city pour the waste into the rivers.
　　and day after day, the once beautiful rivers have turned into smelly and dirty dustbins.
　　最近，我們城市附近的河流被嚴(yán)重污染了。清潔的水不見了。
　　以前，那里曾經(jīng)有許多魚兒自由地游來游去，可現(xiàn)在一條魚也沒有了，城市里許多工廠的廢物傾倒入河流里。
　　日復(fù)一日，那曾經(jīng)漂亮的河流都已經(jīng)變成了又臭又臟的垃圾堆。