official telephone

例句：

1. 1.The official telephone number for the company is 123-4567.
   公司的官方电话号码是123-4567。
2. 2. Please call our customer service department at 100-1234 to get in touch with us.
   请拨打我们的客户服务部电话100-1234与我们联系。
3. 3. We can be reached by email at [email protected] or by phone at (123) 456-7890.
   我们可以通过电子邮件[email protected]或电话(123) 456-7890与我们取得联系。