### Chinese: 他说，与之相比，在上一波的德尔塔疫情中，他治疗的新冠患者“呼吸困难，血氧水平低。
### English: He said that in contrast, in the last wave of the Delta epidemic, the new crown patients he treated “had difficulty breathing and low blood oxygen levels.
### Errors: There is a major error of incorrect translation includes information not present in the correct translation at "new crown patients". There is a minor error of incorrect translation has stylistic problems at "Delta epidemic".

### Improved English: He said that, in comparison, the COVID-19 patients he treated in the last round of epidemic suffered from “breathing difficulties and low blood oxygen.