Pdk
[医][=primary dog kidney]原代狗肾（细胞）
🗣️ 情景例句
The first one to get one hundred points wins.
首先达到一百分的人赢。
A full belly counsels well.
衣食足而后知荣辱。
The mobile phone is as popular as the beeper nowadays.
现在手机和寻呼机一样普及。