### Chinese: 正版书籍，出版社直供，开具正规的电子发票，有问题随时联系在线客服！
### English: Original books, directly supplied by publishers, issued formal electronic invoices, have problems contact online customer service at any time!
### Errors: There is a major error of incorrect translation does not accurately represent the correct translation at "have problems". There is a major error of incorrect translation includes information not present in the correct translation at "at any time". There is a major error of incorrect translation is missing content from the correct translation at "Original books". There is a major error of incorrect translation has stylistic problems at "issued formal electronic invoices". There is a major error of wrong grammatical register (eg, inappropriately informal pronouns). internal inconsistency (not related to terminology) at "publishers".

### Improved English: Authentic books directly provided by publishing house, official electronic invoice available, please contact online customer service if you have any question!