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》

The workers move in a long line as they plant row after row of tulips.

VOA: special.2009.02.03

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

We know for sure Greeks and barbarians, and everybody came to Delphi, and when you came to Delphi and you were going to consult the it was hard, there were a lot of people, a long line, so there was a waiting issue.

我们可以肯定希腊人和蛮族人,都去了特尔斐,当人们到了特尔斐时,就会去请示神谕,这事情很难做,因为人非常多,会有很长的队伍,因此等待是个大问题

耶鲁公开课 - 古希腊历史简介课程节选

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