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To make our rank of leaders younger, better educated and more petent professionally. 26 Examples Analysis ?個(gè)體經(jīng)濟(jì) selfemployment, family business ?社會(huì)主義精神文明 socialist civilization with high cultural level and moral standards ?亂收費(fèi) arbitrary charges ?基本實(shí)現(xiàn)小康 build a moderately welloff society ?街道婦女 housewives working in the neighbourhood ?三高農(nóng)業(yè) highyield, costeffective and hightech agriculture 27 Examples Analysis ?南北朝 的祖沖之計(jì)算出 圓周率 為。 ? In the Northern and Southern Dynasties in the 4th century AD, China?s mathematician Zu Chongzhi calculated π(the ratio of the circumference of a circle to its diameter) to be . 28 Examples Analysis ? 玄奘 萬里取經(jīng),帶回南亞國(guó)家的古老文化。 鄭和 “ 七下西洋 ” ,把中華文化傳向遠(yuǎn)方的國(guó)度。 ? Eminent Monk Xuan Zang of the Tang Dynasty (618 – 907) brought back ancient culture after braving long journeys to South Asian countries. In the Ming Dynasty (1368 – 1644), Chinese navigator Cheng Ho led a fleet to what the people called the West Sea seven times in the 15th century, spreading the Chinese culture to distant land. 29 Examples Analysis ?張騫出使西域,開拓舉世聞名的 “ 絲綢之路 ” 。 ? Imperial envoy Zhang Qian?s trip to the West in the Han Dynasty (206 BC – 220 AD) over 2,000 years ago opened up the worldfamous Silk Road. 30 Examples Analysis ?早在公元前二千五百年,中國(guó)人就開始了 仰觀天文 、 俯察地理 的活動(dòng),逐漸形成了 “ 天人合一 ” 的宇宙觀。 ? As early as 2,500 BC, Chinese began astronomical observation and geographical survey, and gradually formed a world outlook of an integration of the universe and humanity.