新世纪前期，中国将面临严重的“资源安全”问题。
During the earlier stage of this century, China will face serious problems of resources security.
展望21世纪(特别是21世纪前期)的力学发展趋势。
Trends of mechanics development in the 21st century (especially in its carly period) is...
胡徐围绕苏俄问题的歧争是20世纪前期中国思想史上一个饶有意味的事件。
This dispute is a significant event in the history of 20th century Chinese philosophy.
上世纪九十年代中前期，我国的广告代理制正式推行。
Chinas Advertising Agencies System was put in practice in the early 90s.
上世纪九十年代中前期，我国的广告代理制正式推行。
Chinas Advertising Agencies System was put in practice in the early 90s.
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