Sacral bursae
[医] 骶部囊
🧩 词语组成解析
a. 祭典的, 圣礼的, 神圣的, 骶骨的\\n[医] 骶骨的
n. 囊, 粘液囊( bursa的名词复数 ); [医]（单bursa）囊, 粘液囊
🗣️ 情景例句
Then, in college, I became good at it.
然后， 在大学， 我变得很精于数学。
How long have you studied English?
你学英语多久了？
It is because in the modern world, English is very widely used for business between different countries.
这是因为在现今世界，英语广泛应用于国与国之间的贸易往来。