Child : Why is there so much garbage in the street, Mom? Mother : Because there are many litterbugs. Child : What are litterbugs? Mother : They're people who don't put their rubbish in trash cans. 垃圾虫 小孩：妈妈，为什么街上有这么多垃圾呢? 母亲：因为有很多垃圾虫。 小孩：什么是垃圾虫呢? 母亲：就是那些不把垃圾丢在垃圾箱里的人。
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