同学你好，该知识点来自沪江网校《2023年11月CATTI笔译二级【韩刚签约班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学好
1.remain=continue to be sth，所以不能说China economy remained growth rate。可改为China economy has been growing at the rate of 7.1% on average per year in the past 5 years.
2.with accumulated more than 66 million：accumulated表示“累积”，可删去；
3.contributing to 51.6% share to its GDP：删去第一个to，contribute sth to，所以应为contributing 51.6% share to its GDP；
4.among its impressive economy growth：among是“在…的中间”的意思，表示“…和…同时”，可以用连词while，也可以用meanwhile。“Meanwhile, its welfare has been improving significantly among its impressive economy growth. ”可改为“Its economy has been growing impressively. Meanwhile, its welfare has been improving significantly.  ”
5.It enjoyed average 13.2 million new urban jobs：“平均”可译为on average，本句可改为“It enjoyed 13.2 million new urban jobs on average.”
6.as having been said above应为as has been said above，或直接说as said above；
希望对同学有帮助！