He was taken hostage while on his first foreign assignment as a television journalist.

他第一次作为电视记者出国采访时就被扣作人质。

《柯林斯英汉双解大词典》

He was an orphan, and he had no family, and he was on his first long voyage at sea.

他是孤儿、没有家人，这是他首次出海远航。

youdao

He caught the ball on his first toss and then served a fault.

他击中了第一次抛起的球，随后发球失误。

《柯林斯英汉双解大词典》

Then Barack Obama heads to Turkey for the last stop on his first trip to Europe as president.

VOA: special.2009.04.04

He was an orphan, he had no family, and he was on his first long voyage at sea.

他是孤儿，没有家人，这是他首次出海远航。

耶鲁公开课 - 公正课程节选

I'm not sure if it's altogether true, but it's a good story, at least, about the famous German philosopher who said that on his first teaching of the Republic, he went through the whole book, ! taught the whole book in one seminar, one semester.

不确定是否都对，但是讲得很好，至少，讲者是著名德国哲学家,他在首堂讲授《理想国》的课中如此提问，然后教完整本巨著，整本巨著在一个学期内教完，一个学期。

耶鲁公开课 - 政治哲学导论课程节选

Fusilier Flint-Broughton had joined the Army in November 2011 and was on his first overseas deployment.

BBC: Fuberal of Fusilier Samuel Flint-Broughton

Mr Kerry visited Egypt on his first overseas trip as the top US diplomat.

BBC: John Kerry returns to Middle East on 'listening tour'

He is the 42nd jockey to win the race on his first Derby mount.

WSJ: I'll Have Another Wins Kentucky Derby