Precollagen
[化] 前胶原\\n[医] 前胶原, 原成胶
🗣️ 情景例句
I'm glad you feel you've finally put it all together.
我很高兴你终于就绪了。
Where do you have your lunch?
你在哪儿吃午饭？
Did he sleep well?
他睡得好吗？