In the center of the main road, there's a long line of flags of the world.

在主干道的中央，有一长排世界各国的国旗。

youdao

She came from a long line of doctors.

她来自一个医生世家。

《牛津词典》

We were part of a long line of artists.

我们是由古至今代代艺术家中的一代。

《柯林斯英汉双解大词典》

To represent that chain of events, a long line of oversized, brightly painted dominoes has been set up running for one-and-a-half kilometers in an area where the Wall once stood.

VOA: standard.2009.11.09

Said a different way, in the case of the straight-line programs, how long would it take to run a program?

换种说法，在直线式程序里面，运行一个程序要多长时间？

麻省理工公开课 - 计算机科学及编程导论课程节选

If I have Avogadro number of these things in a long line, you can bet it is going to be a solid.

如果在一条直线上,这些东西有阿伏伽德罗常数那么多，你肯定会说它是固体。

麻省理工公开课 - 固态化学导论课程节选

Nannup, the son of a Noongar elder, comes from a long line of experienced outdoorsmen.

BBC: Australia rediscovers its urban indigenous heart

You come from a long line of great poets, some of the greatest poets since Homer.

NPR: An Author's Companion in Rage, Exile and Return

Trescothick is just the latest in a long line of cricketers crippled by mental demons.

BBC: Bitter-sweet sympathy