Metabolin
代谢物
🗣️ 情景例句
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。
Now, seeing them all here together for the first time.
现在他们都到了这里。
The petrol had nearly all been used up.
汽油几乎已经用光。