Lfn
[医][=lactoferrin]乳铁蛋白
🗣️ 情景例句
I've been thinking about it for weeks now.
为这事我想了几个星期。
You make the failure complete when you stop strying.
不再努力之时，就是完全失败之日。
The search proved difficult, for the puma was often observed at one place in the morning and at another place twenty miles away in the evening.
事实上搜寻工作很困难，因为常常是早晨在甲地发现那只美洲狮，晚上却在20英里外的乙地发现它的踪迹。