Pdk
[医][=primary dog kidney]原代狗肾（细胞）
🗣️ 情景例句
He went to Canada on business.
他因公赴加拿大。
I'm brushing my teeth in the bathroom.
我在浴室刷牙。
have no chance of transporting us to the nearest other star, four light years away,
但尚不可能把我们送到离我们最近、相距4光年的其他星球上去，