n.忠诚，忠实（fidelity的复数形式）； 双语释义：n.(名词)[U]忠诚，忠实faithfulness;loyalty[U]忠贞 loyalty in marriage shown by having a sexual relationship only with one's husband or wife[U]翔实，精确，(声音、色彩等)逼真 (of sth copied or reported) closeness in sound,facts,colour,etc. to the origi