Pack animal
n. 畜（如马、骆驼等）
🧩 词语组成解析
pack
[pæk]
n. 一群;包裹;（纸牌的）一副;一组;
vt.& vi. （把…）打包;塞进;拥进;（使）聚集成团;
vt. 挑选;压紧;携带;拧紧;
vi. 包装;紧挤在一起;便于折叠收藏的;匆忙离去（有时与 off 连用）;
🗣️ 情景例句
but they need me at the hospital today,
但今天医院有事，
A heavy purse makes a light heart.
腰包钱财足，心境自然宽。
It has always been a mystery to me who city dwellers, who appreciate all these things, obstinately pretend that they would prefer to live in the country.
城里人对这一切心里很明白，却偏要执拗地装出他们喜欢住在乡村的样子，这对我来说一直是个谜。