它们不仅结实耐用，而且很容易回收和再利用，它们在世界各地的尺寸都是统一标准，因此无论您身在何处，找到这些材料都相当容易获。
They are durable, easily reused and recycled, and they come in standard sizes around the world, making it easy to gain access to the materials no matter where you are.
电池应该在合适的场合被循环利用，而不是扔在垃圾堆，而纸张和便利贴如果单独收集就很容易被回收再利用。
Batteries should be recycled at the appropriate locations, not thrown in the garbage and paper and post-it notes can easily be recycled if kept separate.
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