SQL:select * from knowledge_window.favourites where user_id='' and url_id='' ERROR:Table 'knowledge_window.favourites' doesn't exist
① I’m sorry to hear that.听到这事,我很难过。
② I’m sorry about your illness. 是关于你的病,我感到很抱歉
③ I’m so sorry to hear that you are going away.听说你现在要走了,我很难过。
④ Please accept my deep sympathy. 请接受我深深的同情。