Fena
[医][=excreted fraction of filtered sodium]滤过钠排泄部分
🗣️ 情景例句
Susan and Harry have a sitter for Michelle in the city,
Susan和Harry在城里给Michelle找到一位临时保姆，
I don't seem to have any luck today.
我今天运气不好。
I wanted to ask Chen Wei too, but he's away.
我也想请陈伟，但他外出了。