A threefold cord is not quickly broken.是什么意思？

A threefold cord is not quickly broken.

三股拧成的绳子不易断.

threefold

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例句
A threefold cord is not quickly broken.
三股拧成的绳子不易断.

cord

n. （细）绳，灯心绒裤；vt. 用绳子捆绑，堆积（柴薪）；

例句
Bind the ends of the cord together with thread.
用线把这根绳子的两端捆扎起来。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

not

adv. 不，[用以表示否定、否认、拒绝、禁止等]不是，几乎不，未必，没有[用于否定后面的词或短语]；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

quickly

adv. 迅速地，立即，马上；

例句
Reaching this agreement so quickly was a great achievement...
如此快速达成这项协定是一大伟绩。

broken

adj. 破碎的，打碎的，（腿，臂等）已骨折的，（线条）虚线的，断续的，被打断的；v. 打破，折断(break的过去分词)，打破（纪录），损坏；

例句
It seems at least that we've broken the back of inflation in this country...
看起来至少我们已经解决了这个国家通货膨胀中最棘手的问题。