Coelomic sac
[医] 体腔
🧩 词语组成解析
体腔
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
He never married because
他不结婚是因为
Besides the required courses, I'm taking an elective in the Lab Science.
除必修科目外，选修科目我选了实验科学。
I think you should get a tank if you want to keep fish.
我看你要是真想养鱼的话，就该找个水箱。