Relegation to the Third Division would prove catastrophic.是什么意思？

Relegation to the Third Division would prove catastrophic.

降到丙级将是灾难性的。

relegation

n. 驱逐，贬黜，降级；

例句
I think Birmingham City are prime candidates for relegation next season...
我认为下个赛季伯明翰城队最有可能降级。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

third

n. 第三，三分之一，第三档；adj. 第三的，三分之一的；

例句
A third brigade is at sea, ready for an amphibious assault.
还有一个旅已在海上待命，准备两栖进攻。

division

n. 分开，分隔，[数]除法，部门，[军]师；

例句
The team has accustomed itself to the pace of first division rugby...
球队适应了英式橄榄球甲级联赛的节奏。

would

aux. 将，将要，愿意，会，打算，大概；v. (will 的过去式，用于转述)将；

例句
I would love to go abroad this year, perhaps to the South of France.
我今年很想出国，可能是去法国南部。

prove

vt. 证明，证实，[法]验证，检定，显示；vi. 显示出，证明是；

例句
I have to prove myself as a respectable, balanced, person.
我必须证明自己是个正派、稳重的人。

catastrophic

adj. 灾难的，惨重的，悲惨结局的；

例句
His mother's untimely death had a catastrophic effect on him...
他母亲的早逝给了他沉重的打击。