维系的英文：
to maintain
to keep up
hold together

参考例句：

Custom was the cement of society in early days.
习俗是早期社会维系的纽带。

Constant arguing doesn't make for a happy marriage.
经常争吵不利于维系美满的婚姻。

You depend upon me for your sustenance.
你依靠我来维系生计。

The only link between buyer and seller is a licence agreement.
买方与卖方之间的关系只凭一个技术许可合同维系。

He hoped to hold the family together through the difficult period.
他希望维系家人团结，渡过困难时期。

They know that the destiny of Singapore is in Southeast Asia.
我国华人也知道，新加坡的命运紧密维系在东南亚。

The financial system is held together with a very thin filament called confidence.
金融体系只靠一条名为信心的细线所维系。

Traditional Chinese festivals invariably centre on maintaining and improving human relations.
华族的传统节日都离不开维系人伦与增进人际关系这个基本主题。

Of course that is all ended, since families are held together by no bond of coercion, legal or social
当然，那种情况今天已经不存在了，因为现在的家庭不是由法律或社会的强制性来维系的。

maintain是什么意思：
v. 保持，维持；支持，抚养；保养，维修；坚持

maintainable adj.
可维持的；主张的

motor maintainer
自动养路机

blade maintainer
单刃养路机

keep是什么意思：
v. 保持，处于；继续，重复；使耽搁；抚养；履行
n. 生活费，生活必需品

That news will keep.
那个消息留待以后再宣布。

They keep a shop.
他们经营一家商店。

How are you keeping?
你最近还好吧？

hold是什么意思：
n. 控制；握住；保留
v. 拿住，握住；保留；保持不变，持续；约束，控制；拘留；容纳；持有；适用

nail down; nail in;hold by
钉住;使人遵守诺言

We hold on in spite of the storm
我们冒着暴风雨继续前进。

hold a fair to raise money
举办义卖会筹款