★ pack n.
① (-)包;(-)捆;包裏:
The horse carried two packs on its back.
.那匹马背上驮着两包东西。
②(商品的)纸包;纸盒(packet):
a food pack一食品包
a pack of cigarettes一包香烟
③ 一群;一帮;一堆:
(2019全国3卷)
We were first greeted with the barking by a pack of dogs，seven to be exact.
首先迎接我们的是一群狗的狂吠，准确地说是七只。
vt& vi
① (把…)打包;(把…)装进(箱子等)
（2009江西卷）
They hurriedly packed their belongings into the suitcase.
他们匆忙地把东西装进了行李箱。
② 塞满;挤满:
The bus was packed with people，公共汽车上挤满了人。
▲ pack up把…打包;收拾(行李):
（2009浙江卷）
Once a friend and I packed up some peanut butter and sandwiches for an outing.
有一次，我和一个朋友包好一些花生酱和三明治去郊游。
★ unpack v.打开包裹；分析；卸下……
★ package n.包裏(parcel)
★ packaging n. 包装;包装材料
★ packet n. 小包;小袋
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