fidelity
n. （对配偶或伴侣的）忠贞；(对人、组织或信仰的）忠诚；精确性；（CD播放器、收音机、电视机等设备的）保真度
复数 fidelities
例句
He believed in marital fidelity.
他赞成对婚姻忠实。
《柯林斯英汉双解大词典》
Fidelity means accuracy of the copying process.
保真度是指复制过程的准确性。
People have failed to act in fidelity to their vows.
人们没能忠诚地履行自己的誓言。
