Dural sac
[医] 硬脊膜囊
🧩 词语组成解析
a. 硬脑膜的\\n[医] 硬脑[脊]膜的
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
Why were you out of work for so long?
你为何这么久没有工作？
I've lost my nerve.
我失去了勇气。
Have you taken his temperature?
你给他量过体温吗？