The tone and pitch of the horn are determined by the size and shape of the diaphragm as well as the path through which the sound must travel.是什么意思_The tone and pitch of the horn are determined by the size and shape of the diaphragm as well as the path through which the sound must travel.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句