be quiet的音标：...

I told them to be quiet and go to sleep.我叫他们不要说话，马上睡觉。Sit down and be quiet in front of your elders and betters.在长辈和上级面前要老老实实地坐着。"Och be quiet then," Shawn said.“哎呀，安静一下吧，”肖恩说道。...

保持安静...