有一根柱子正挡着我的视线，所以我只能看见舞台的一半。

There was a column directly in my line of sight, so I could only see half the stage.

《牛津词典》

他手里拿着一根有金制端部的手杖。

In his hand, he carried a gold-tipped cane.

《柯林斯英汉双解大词典》

想象一根有结的粗绳子。

Imagine a thick piece of rope with a knot in it.

youdao

When you're driving in your car, there's a needle and the needle says 60; that's your velocity at this instant.

当你在开车时,有一根指针指着60,表示你这个时刻的速度

耶鲁公开课 - 基础物理课程节选

Suppose I had a rope, that stretched from that into the room, all the way across-- to this end of the room.

假设我有一根绳子，从屋子的这一端，一直伸展到-,屋子的这一端。

耶鲁公开课 - 死亡课程节选

We only have the one bond so the actual HF molecule is polar, it has a net dipole.

但HF中只有一根键,所以分子也是极性的而甲烷中有一个网状偶极。

麻省理工公开课 - 固态化学导论课程节选