### Chinese: 或者又问：听装与袋装的价格为什么差价这么大呢？
### English: Or ask: Why is the price difference between listening and bagging so large?
### Errors: There is a major error of incorrect translation does not accurately represent the correct translation at "listening and bagging". There is a major error of incorrect translation is missing content from the correct translation at "Why are the prices of bagged and canned milk powder so different?". There is a major error of incorrect translation includes information not present in the correct translation at "so large".

### Improved English: Or you may ask: why are the prices of bagged and canned milk powder so different?