That's the thin line between success and failure.

成功与失败，只有一线之悬。

youdao

A real man knows the thin line between confident and cocky.

一个真正的男子汉会明了自信和自负的界线。

youdao

A real man knows the thin line between confident and cocky.

一个真正的男子汉会明了自信和自负的界线。

youdao