The president paid a courtesy call on Emperor Akihito.

总统礼节性地拜访了明仁天皇。

《柯林斯英汉双解大词典》

The dealer will provide you with a courtesy car while your vehicle is being repaired.

车辆维修期间，经销商会提供免费使用的汽车。

《牛津词典》

If I was going to run for Congress, I'd have to pay a courtesy call on him sooner or later.

假如我打算参加竞选众议员，我迟早都得礼节性地去拜访他。

youdao

A young Danish scientist by the name of Niels Bohr, he just finished his Ph.D. in Copenhagen, and he had won himself a postdoctoral fellowship, courtesy of the Carlsberg Brewery foundation.

一个年轻的丹麦科学家,名字叫做尼尔斯，波尔，他刚刚在哥本哈根取得博士学位，他取得了博士后奖金，由嘉士伯基金资助的。

麻省理工公开课 - 固态化学导论课程节选

Batarical Hatashmi(ph), one of the Sunni leaders, insists it was nothing more than a courtesy call.

NPR: Infighting Marks Sunni Political Efforts in Iraq

As is common practice, the Chinese were given a courtesy heads-up that this action would be taken.

WHITEHOUSE: The White House

Swarthmore says it does waitlist some students as a courtesy, but rarely anyone with no chance of getting in.

WSJ: College Waitlists Offer Little Hope