fidelity [fidelities](the degree to which an electronic system accurately reproduces a given sound or image) noun [UK: fɪ.ˈde.lɪ.ti] [US: fə.ˈde.lə.ti]
保真度 /bǎozhēndù/ noun
truth [truths](state or quality of being true to someone or something) noun [UK: truːθ] [US: ˈtruːθ]