单词学习：sack 名词/动词
sack
/sæk/
1. 麻袋，大袋；2. 解雇；3. 洗劫，劫掠
Mr. Gu, the teacher, asked the students to put the old books into a sack for recycling.
顾老师让学生们把旧书放进麻袋里以便回收。
单词卡片
卡片已就绪
