请翻译一下下面的英语 不要拿金山词霸这种阿~
Since the early 1990s, China's embrace of market forces has upturned the provision of public services.The trend began some 15 years ago among primary and junior schools, and has reinforced an existing inequality. For most of the communist era, a two-tier system identified a few “key schools” that receive extra money and other favours in order to nurture pockets of academic excellence.
参考答案:中国的市场占有量自90年代以来使大众服务呈上升趋势。
这个趋势约在15年前首先在小学和初中教育中出现，但发展不均衡。在多数拥护共产主义的地区，一个“两个阶级”的系统产生出一些所谓的“精英学校”，这些学校收取额外的钱和其他资助来填塞教育家的钱包。