Gentiodextrin
龙胆糊精
🗣️ 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。
Please don't forget to say goodbye to the rest of the family for me.
请别忘了代我向你的家人告别。
Is it a black one?
是快黑的吗？