Every mailing address in the United States has a "ZIP code" which should be used whenever possible. Post offices are generally open from 8:30 to 5:00 from Monday to Friday and until noon on Saturday.
美国每一个通信地址都编有邮政号码, 应该尽量加以利用. 邮局的营业时间一般是星期一到星期五的上午8点半至下午5点半.星期六只营业至中午.
1.A: How much is an airmail letter to Japan?
B: I'll have to check. Can I help you with anything else?
A: I'd like a 20 cent stamp, please.
B: There you are.