质量不好的英文

Sometimes the quality of things you buy are not good.

This thing whose qality is too bad,l just used one day but it broken

of poor quality/of low quality/inferioreg.inferior coal/faulty coal劣种煤eg.The book is of poor/low quality indeed.这本书质量真差这样翻译是最地道的英式译文，希望我的回答能对你有所帮助．

this poor quality .i only use a day it broke

Dear ***we have found that the toy bears that suppliers offered to us are very bad in quality according to previous ones, so we don't recommend you to buy these toy bears, please cancel the transaction.thanks

In bad qualityin poor quality

这东西质量太差,我才用了一天就坏了This poor quality, I only use a day it broke