a countrywide mail-order service的用法和样例：
- What is the email address for Naxos Mail Order service?
- For customers in North American and Europe, please contact our licensed distributors, as we do not offer direct mail order service outside of China.
- Our department now provides a mail order service with a discount for a whole set of textbooks published by Sanhuan Press: 5 textbooks, and 24 tapes, the charge is 145 yuan. Additionally, there is a 15% shipping and handling fee.
- I got bitten in a mail order swindle.
- On the Development of Postal Online Mail Order Service
- Our mail orders are now running at$1,200 a week.