Serous sac
[医] 浆膜囊
🧩 词语组成解析
a. 如水的, 浆液的, 血清的\\n[医] 血清的; 浆液的
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
Railroad stations or airports--Grandpa always tells us he'll get here by himself.
无论是火车站还是机场，爷爷总是说他会自个儿设法到这 。
Sometimes it's nice just to sit around and do nothing.
偶尔坐着无所事事，也算是赏心乐事。
They don't often have a bad day this year.
他们今年的运气还不错。