### 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 world's unprecedented major changes in a century and the global pandemic of the new crown pneumonia epidemic have intertwined the impact, the external environment has become more complex and severe, and the tasks of domestic new crown pneumonia epidemic prevention and control and economic and social development are extremely <v>arduous and arduous</v>.
### Errors: There is a major style/awkward error at "arduous and arduous" 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.
