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金属扣合技术分为哪四种？

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“三束表面改性技术”的“三束”指哪三束？

英译汉One can’t speak of Egypt without thinking of the Pyramids, nor of China without the Great Wall.One can’t speak of Egypt without thinking of the Pyramids, nor of China without the Great Wall.

英译汉When reports came into London Zoo that a wild puma had been spotted forty-five miles south of London, they were not taken seriously.

英译汉You don’t love a women because she is beautiful, but she is beautiful because you love her.