一根筋

Is it that simple - minded fellow who keeps hitting his cow bell?

因为这个一根筋的家伙不停地敲他的牛铃？

Don´t too be serious with him! His one - track mind, Don´t you know?

别跟他较劲了！ 他一根筋， 你还不知道？

She is only pigheaded but not had hostility.

她只是一根筋，但并无恶意。

He is inflexible in dealing with things.

他做事情就是一根筋，不灵活。

When I was your age, I was incredibly single - minded in my goal to be a physicist.

我在你们这个年龄， 是超级的一根筋，我的目标就是非成为物理学家不可。