n. 公事包

box/boxer/boxing/case/briefcase/chest/breast/stomach/waist
记忆：
1. box n.盒子, 箱, v. 装...入盒中, 拳击 Put your pens away into your pencil-box after you use them. 用完以后，把钢笔收拾好放进文具盒里。
2. boxer n. 拳击手 Tyson is a world-famous boxer. 泰森是世界闻名的拳击手。
3. boxing n. 拳击 Boxing is not so popular as football in China. 拳击在中国没有足球那样受欢迎。
4. case [ keis ] n.事, 病例, 案例, 情形, 场合 In no case will the doctor abandon studying his cases. 医生决不能放弃对病例的研究。in case (of/that)万一 in that case那样的话 in no case决不
5. brief [ bri:f ] 简短的；briefcase n. 公文包 Putting the important papers into his briefcase, he hurried to the station. 他把重要文件放入公文包后就匆忙赶到了车站。
6. chest n 箱, 柜, 胸腔, 胸膛 In that case, you’d better have your chest examined by an expert.那样的话，你最好找个专家检查一下你的胸膛。
7. breast [ brest ] n. 胸部 There is nothing wrong with his breast, to his relief. 他的胸部没有问题。他松了口气。
8. stomach n. 胃, 胃口 I have no stomach for any meal these days.这些日子我不想吃什么东西。
9. waist [ weist ] n. 腰 Sometimes my waist hurts. 有时我的腰疼。
另类阅读：
The famous boxer often took a briefcase as well as a chest filled with small boxes of drugs in case of his stomachache.