Pdk
[医][=primary dog kidney]原代狗肾（细胞）
🗣️ 情景例句
Once you become a celebrity, you can kiss your private life goodbye.
一旦你成为名人，你就没什么私生活可言了。
I went to see a friend of mine.
我去看了一个朋友。
After entering the narrow gap on the plateau, they climbed down the steep sides of the cave until they came to narrow corridor.
他们从高原上的窄缝进去，顺着笔直陡峭的洞壁往下爬。来到一条狭窄的走廊上。