Precollagen
[化] 前胶原\\n[医] 前胶原, 原成胶
🗣️ 情景例句
The truth.
实话实说。
Is it big or small, daddy?
爸爸，它是大的还是小的？
That's right! A friend gave me a photo. I wanted to show it to you.
对！一位朋友给了我一张照片。我要拿给你看看。