Fena
[医][=excreted fraction of filtered sodium]滤过钠排泄部分
🗣️ 情景例句
Don't be mixed up in such business.
不要跟这种事有所关连。
Necessity and opportunity may make a coward valiant.
需要和机会，可使懦夫变勇敢。
You must look after it. Give it to Mr. Hu.
你一定要好好保管啊！让胡老师帮你拿着。