It is all very well to urge people to give more to charity when they have less, but is it really fair?鼓励那些自身并不富裕的人更多地投身慈善事业固然没错，但这么做真的公平吗？The firm has taken out adverts in national newspapers to urge customers to return suspect products.该公司在全国性的报纸上登出广告，催促顾客退回疑似假冒产品。