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 UID94145 帖子2194 积分2526 学分15866 个 金币3 个 性别男 在线时间259 小时 
 
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                 41.不可推卸的义务 unshakable duty 42. 满足需求 satisfy / meet the needs of…
 43.可靠的信息源 a reliable source of information
 44.宝贵的自然资源 valuable natural resources
 45.因特网 the Internet (一定要有冠词,字母 I 大写)
 46.方便快捷 convenient and efficient
 47.在人类生活的方方面面 in all aspects of human life
 48.环保(的) environmental protection / environmentally friendly
 49.社会进步的体现 a symbol of society progress
 50.科技的飞速更新 the ever-accelerated updating of science and technology
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