Spheroid joint
球窝关节，杵臼关节
🧩 词语组成解析
n. 球状体, 回转椭球体\\n[医] 球形的, 球状的; 球形体, 球状体
joint
[dʒɔint]
adj. 共同的，联合的;共享的;两院的;连带的，共同的;
n. [解]关节;接合处;下流场所;一块烤肉（英式英语）;
vt. 结合，联合;为…装上接头，使…有接缝;
🗣️ 情景例句
No. I really don't know how to go about it.
没有。我真不知道如何填。
I meet the boy whose aunt is a nurse.
我遇到那个男孩的姑妈是护士。
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons.
历史学家迄今认为日历是随农业的问世而出现的，因为当时人们面临着了解四季的实际需要，