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
I was when I first came to the United States.
当我刚到美国来的时候是感到有点紧张。
Kind words are worth much and cost little.
口头方便不费力。
Why did you stay at home?
为什么呆在家里？