Precollagen
[化] 前胶原\\n[医] 前胶原, 原成胶
🗣️ 情景例句
We have closely connected with firms in USA.
我们同美国有良好的业务关系。
I tried calling you several times yesterday but I couldn't get through.
我昨天给你打了几次电话，但都没有打通。
That's not true. I don't want to argue about it any more. Anyhow, I'll see you next week.
不是这样的。我不想为这件事再和你争吵。无论如何，我下星期会见你的。