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。
Of course, we should arrest him, but as he has a good record, we shall let him off this time.'
当然,我们应该逮捕它,但由于它一贯表现很好,这次我们饶了它。