You must develop the muscles of your speech organs to produce unfamiliar sounds.
所以你必须训练和发展你的发音器官(声带、舌、口、鼻腔等)的肌肉,以便发出陌生的(另外一种语言)声音。
Was the noise a cause of the illness, or were the complaints about noise merely a symptom?
是噪音引起了(精神)病呢,还是(精神)病的症状之一是对噪音的抱怨?