然而，我居住在一个小的城市，而北京是一个大城市，单单靠告诉人们可以回收利用并不够。
However I live in a small town and Beijing is much larger and just giving people the option to recycle has proven to not be enough.
然而，我居住在一个小的城市，而北京是一个大城市，单单靠告诉人们可以回收利用并不够。
However I live in a small town and Beijing is much larger and just giving people the option to recycle has proven to not be enough.
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