### Chinese: 当地时间7月23日，美国新冠肺炎确诊病例数突破400万，占全球病例30%。
### English: on July 23, local time, the number of confirmed cases of new coronary pneumonia in the United States exceeded 4 million, accounting for 30% of global cases.

### Improved English: On July 23, local time, the number of confirmed cases of new coronary pneumonia in the United States exceeded 4 million, accounting for 30% of global cases.
