相关单词近義詞 quietly 安靜地, noiselessly 靜靜地, silently 沉默地, stealthily 暗地裡, mutely 無言地臨近詞Sounders, sound, sound velocity calibration, sound absorption apparatus, sound reinforcement system, sound-proof drilling rig, Sound channel in the ocean, sound-absorbing property, sound absorption efficient, sound-deadening material, sounds that offend the ear, sound-reproducing system 返回 soundlessly