我经常在街道上看见汽车排放尾气，在洗手间，我经常看见有人用后不关水龙头。
I always see cars producing smog on the street. And in the bathrooms, I see students leaving the water tap on after using them.
一些人用完水后不关水龙头，而另外一些人甚至污染干净的水，这使情况变得更糟糕。
Some people don't turn a tap after use, while others even pollute clean water and make the situation worse.
有同学洗衣服后不关水龙头，离开教室不关灯，浪费纸张和其它学习用品，浪费食物；
Some students didn't off the tap when finished washing, didn't turn off the lights when leaving the classroom, waste of paper and other stationaries, waste of food;
有同学洗衣服后不关水龙头，离开教室不关灯，浪费纸张和其它学习用品，浪费食物；
Some students didn't off the tap when finished washing, didn't turn off the lights when leaving the classroom, waste of paper and other stationaries, waste of food;
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