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。
I had no sooner got back to the kitchen than the doorbell rang loud enough to wake the dead.
我刚回到厨房,门铃又响了起来,响声足以把死人唤醒。