Lfn
[医][=lactoferrin]乳铁蛋白
🗣️ 情景例句
What's all the cheering about?
这么高兴是为什么？
He is unworthy to live who lives only for himself.
为己而生，生而可耻。
While I write my pen moves, but the paper keeps still.
我写字时，笔是移动的，纸是静止的。