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(一定要由冠词,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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