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。
A radio message from the mainland had been received by the ship's captain instructing him to give up the search.
返航前,该船船长收到了大陆发来的电报,指示他们放弃这次搜寻。