### Chinese: 一年来，世界百年未有之大变局和新冠肺炎疫情全球大流行交织影响，外部环境更趋复杂严峻，国内新冠肺炎疫情防控和经济社会发展各项任务极为繁重艰巨。
### English: In the past year, the unprecedented changes in the world in a hundred years and the intertwined effects of the global pandemic of the new crown pneumonia epidemic have made the external environment more complex and severe, and the domestic tasks of the prevention and control of the <v>new crown pneumonia epidemic</v> and economic and social development are extremely onerous.
### Errors: There is a major accuracy/mistranslation error at "new crown pneumonia epidemic" within <v></v>.

### Improved English: For the past year, under the intertwined influences of the great changes never seen during the past one hundred years and the COVID-19 global pandemic, external environments were more complicated and grim, and the tasks of pandemic prevention and control and various economic and social development tasks are extremely heavy and arduous.
