high fidelity (also hi-fi)

reproduction of sound (by radios, record-players, tape-recorders, etc) that is of high quality, with little or no distortion of the original sound （收音机、 电唱机、 录音机等复制声音的）高保真度.

hide-out (US also hideaway), hidebound, hideous, hideously, hideousness, hiding, hiding-place, hie, hierarchical, hierarchy, hieroglyph, hieroglyphic, hieroglyphics, higgledy-piggledy, high, high chair, High Church, high colour, High Commission, high explosive, high frequency (abbr 缩写 HF), High German, high life, high pressure, high priest, high road, high school, high season, high spot, high street, high table, high tea, high technology, high tension, high tide, high treason, high water, high wire, high-born, High-Churchman,