1. letter-box 信箱;
2. mail order 邮购定单;
3. mineral water 矿泉水;
4. mother-tongue 母语;
5. nail varnish 指甲油;
6. news bulletin 新闻公报;
7. pen friend 笔友;
8. pocket money 零用钱;
9. police station 警察分局;
10. post office 邮局;
11. sign language 手语;
