科研之友
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<正>你知道"三明治"这个称呼是怎么来的吗?Many stories have been told about the invention of sandwiches. One is about the fourth Earl(伯爵) of Sandwich, in England.About 300 years ago, wealthy people of -ten spent hours at dinner. The earl did not want to waste his time at long dinners. He preferred to play games. So, when he was hungry, he usually asked for a meal of meat served between two pieces of bread.
