It was her first official engagement.
那是她第一次正式约会。
An official pushed through the throng.
一位官员从人群中挤过。
This was her first official engagement.
这是她的首桩公务。
The company's official retiring age is 65.
公司正式的退休年龄为65岁。
The country's official language is Spanish.
这个国家的官方语言为西班牙语。