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①主题句 ②理由一 ③理由一的延伸 ④理由二 ⑤理由二的延伸 ⑥理由二的进一步解释 ⑦理由三 ⑧理由三的延伸 ①improve peoples living standards ②increase the government revenue ③improve the image of our country ④increase reputation and upgrade the status in the international community ⑤enhance mutual understanding ⑥play an educational role ⑦maintain world peace | 
