Since the late 1990's, knowledge economy has become the main issue that people heed.

进入90年代后期，知识经济已成为人们普遍关注的热点。

youdao

Since the late 1990's, knowledge economy has become the main issue that people heed.

进入90年代后期，知识经济已成为人们普遍关注的热点。

youdao