係

system

department

to tie

faculty

tied

upbind

fasten

relation

corollary

tie

loop up

series

hitch

tying

line(unit of length, =1/12inch)

attach

係[jì]

-（打结;扣）tie;fasten;doup;buttonup:
fastenaclotheslinebetweentwotrees;把晾衣服绳系在树上
buttonupajacket;把衣服扣子系上

这个街区的供暖系统不太好用。
The heating system in this block doesn't work well.

工人们装好了供水系统。
The workmen fixed the water system.

我们太阳系的行星有水星、金星、地球、火星、木星、土星、天王星和海王星。
The planets of our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

这个暖气系统有自动化的温度调节系统。
This heating system has an automatic temperature control.

系词将一个句子的谓语和主语连起来的动词，如be或seem的一种形式
A verb, such as a form of be or seem, that identifies the predicate of a sentence with the subject.

工人们正在安装供暖系统。
The workers are installing a heating system.

你知道怎么登录进入这个系统吗？
Do you know how to log in to the system?

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