We are responsible to replace the defective ones.
    我們保換質量不合格的產(chǎn)品。
    It's really something wrong with the quality of this consignment of bicycles.
    這批自行車的質量確實有問題。
    I regret this quality problem.
    對質量問題我深表遺憾。
    We hope that you'll pay more attention to the quality of your goods in the future.
    希望貴方將來多注意產(chǎn)品的質量問題。
    The workings of these machines are inaccurate.
    這批機器運行不準。
    Upon arrival, we found the shipment of wool was of poor quality.
    貨到后，我們發(fā)現(xiàn)羊毛的質量較差。
    The quality of the fertilizer is inferior to that stipulated in the contract.
    化肥質量次于合同中規(guī)定的。
    The quality of this article cannot qualify for first-class.
    這批商品的質量不夠一等品。