official call

例句：

1. 1. The company issued an official call to announce the new product launch.
   公司发出了官方电话，宣布新产品发布。
2. 2.He received an official call from his boss asking for a meeting.
   他接到了老板的官方电话，要求开会。
3. 3. The official call was scheduled for tomorrow at 2 pm.
   官方电话定于明天下午2点举行。