### Chinese: 我们隆重庆祝中国共产党成立一百周年，正式宣布全面建成小康社会、实现第一个百年奋斗目标，开启全面建设社会主义现代化国家、向第二个百年奋斗目标进军新征程。
### English: We solemnly celebrated the centenary of the foundation of the Communist Party of China, officially announced the comprehensive construction of the moderately prosperous society, realizing the first one-hundred struggle objective, start comprehensive construction of the great modern socialist country and start the new journey to the second one-hundred struggle objective.
### Errors: There is a major error of incorrect translation has stylistic problems at "We solemnly celebrated the centenary of the foundation of the Communist Party of China, officially announced the comprehensive construction of the moderately prosperous society, realizing the first one-hundred struggle objective,". There is a major error of incorrect translation includes information not present in the correct translation at "start comprehensive construction of the great modern socialist country". There is a major error of incorrect translation is missing content from the correct translation at "and start the new journey to the second one-hundred struggle objective.". There is a minor error of incorrect translation does not accurately represent the correct translation at "one-hundred struggle objective".

### Improved English: We solemnly celebrated the centenary of the foundation of the Communist Party of China, officially announced the comprehensive building of a moderately prosperous society and the realization of the first centennial objective, and we will embark on a new journey of building a modern socialist country in an all-round way and march towards the second centennial objective.