Cardinal veins
[医] 主静脉
🧩 词语组成解析
n. 纹理；静脉（vein的复数）
🗣️ 情景例句
Don't you have to work?
你明天不用上班吗？
By doing we learn.
经一事，长一智。
It's smaller than the blue one.
它比那件蓝色的还要小。