He served as a captain in the army.

他曾是一名陆军上尉。

《牛津词典》

In addition, he served as a visiting professor at several American universities.

除此之外，他还是几所美国大学的访问教授。

《柯林斯英汉双解大词典》

He served as the praelector in Economics at University College.

他曾在大学学院担任经济学讲师。

youdao

He served as vice president for about a year and a half before the death of President Taylor.

VOA: special.2009.04.09

He served as a delegate to the United Nations during the Cuban missile crisis in nineteen sixty-two.

VOA: special.2009.11.01

Later,he served as an officer in the Union army during America's Civil War.

VOA: special.2010.03.11

He served as a drummer in the Royal Regiment of Fusiliers, performing at ceremonial occasions.

CNN: Suspect in UK killing out of hospital, at police station

He served as an altar boy at St Patrick's Chapel in Pennyburn, close to their home.

BBC: Northern Ireland

After graduating from law school, he served as a law clerk to the Honorable Alan B.

WHITEHOUSE: The White House