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• 英语翻译Some inventions are so useful,but seem so simple,that we wonder why no one thought of them long ago.Post-it Notes,the pieces of paper that you can fasten almost anywhere and then remove without leaving any sign that they were there,are an example of such an invention.　　Post-it Notes were invented about twenty years ago by Art Fry,a scientist at 3M Corporation.The idea for the product came from a frustrating experience he often had while singing in
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• 英语翻译American Arthur Fry inventde the Post-it note in 1974.At first,he wanted to find a better bookmark (书签) One day,he saw his friend's special glue (胶水).The glue is strong enough to stick on paper.Also there is no mark (痕迹) when you take it away.Fry used the glue on a piece of paper to make his new bookmark.Today,people around the world use Post notes.
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