His voice was low and gravelly.
他音低沉、沙哑。
Ralph says, " I like a gravelly voice, speaking softly and saying... " – well, what Ralph is referring to here is that sometimes women who are trying to be or make themselves sexually attractive may speak in this lower voice.
拉尔夫说,“我喜欢沙哑音, 轻说话,说… … ” ——好吧,拉尔夫在这里指是, 有时那些试图使自己具有性吸引力女性可能会用这种较低音说话。