The paper is mainly concerned with the evolving process and developing trend of modern economic growth theories.

本文根据现代经济增长理论的演化过程，探寻现代经济增长理论的发展趋势。

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From ideographs in early days to a standardized system that we know today, Chinese Character took a long time for evolving and developing.

从萌芽初期的图画等表意符号，经过长期的演变，文字逐渐定型和统一。

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The BBC has over 13 years of experience developing and evolving its red button services, which have brought viewers closer to the action at major events like Glastonbury, Wimbledon and Formula 1.

ENGADGET: BBC's Connected Red Button launches on TiVo, brings true web TV with one tap (hands-on)

The sector is still developing and evolving.

FORBES: Forget The Big Bucks...Today's Investor Also Wants A Different Kind Of Return On His Money

Although we've lost some key players through retirement, we have a good spirit and we're evolving and developing naturally.

BBC: Barbara Daniels