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。
Recently, one of Jeremy's closest friends asked him to make a speech at a wedding reception.
最近,杰里米的一个最亲密的朋友请他在一个婚礼上祝词。