Pankrin
[化] 蛋白酶
🗣️ 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。
Don't be so stubborn!
你还嘴硬！
I would like to wash the clothes for you.
我愿意帮你洗这些衣服。