Aortic sac
[医] 动脉球囊
🧩 词语组成解析
a. 主动脉的\\n[医] 主动脉的
sac
[sæk]
n. （动植物组织中的）囊，液囊;
abbr. 缩写 = (US) Strategic Air Command 战略空军司令部。;
🗣️ 情景例句
What's the spelling of your family name, sir?
您的姓怎么拼，先生？
I often go to market in the afternoon.
我常常在下午去市场。
They were in fashion last year and the year before last.But they're not in fashion this year.
这鞋在去年和前年时兴，而今年已不流行了。