### Chinese: 根据酸度的不同可分为三个级别：
### English: It can be divided into three levels according to different acidity:
### Errors: There is a major error of incorrect translation has stylistic problems at "It can be divided into". There is a minor error of incorrect translation includes information not present in the correct translation at "different acidity".

### Improved English: There are three levels according to acidity: