### 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: In contrast, in the last wave of Delta, he said, the <v>Covid-19</v> patients he treated had "difficulty breathing and low blood oxygen levels.
### Errors: There is a minor terminology/inappropriate for context error at "Covid-19" within <v></v>.

### 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.
