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。

同学你好~
第一段没问题
第二段：
“Since the PRC founded in 1949, opening-up era launching in particular” 中，“founded” 应改为 “was founded”，表被动；“launching” 应改为 “launched”，与 “founded” 保持一致的被动语态形式。
“By doing so China has rapidly become the second largest economy around the world and created two miracles rarely seen around the world for its magically fast economic growth and enduring social stability.” 中，“for its magically fast economic growth” 表述不太准确，可以改为 “due to its miraculously fast economic growth”。
“Thereby to emancipate and develop social productivity remains our essential task.” 中，“Thereby” 作为副词不能直接引导句子，可以改为 “Therefore”。
希望对同学有帮助~