劍橋詞典[ 不可數(shù)或單數(shù)名詞：沒有複數(shù)形式的名詞 ] the number of letters received at one time or on one subject 一次發(fā)送（或收進）的信件；（有關同一主題的）一批信件 It was clear from our postbag that viewers were unhappy about the programme . 從我們收到的來信可以清楚看出，觀衆(zhòng)們對這個節(jié)目不滿意。 [ 可數(shù)名詞：有複數(shù)形式的名詞 ] a large strong bag used by the Post Office for transporting and carrying letters and parcels 郵袋 返回 postbag