sound wave 的英语意思
sound waveˈsound wave noun [countable usually plural] 
查看全部语言翻译 the form that sound takes when it travels声音传播时所呈现的形式
查看全部语言翻译 the form that sound takes when it travels声音传播时所呈现的形式 查看全部语言翻译 the form that sound takes when it travels声音传播时所呈现的形式