Authority thereof shall issue Writs of Election to fill such Vacancies.是什么意思？

Authority thereof shall issue Writs of Election to fill such Vacancies.

管理局须发出令状的选举,以填补这些空缺.

authority

n. 权威，权力，学术权威，[复数]当权者；

例句
Popular acceptance of authority had been an early aim of the Nationalists.
国家主义者的一个早期目标是推动民众对权威的接受。

thereof

adv. 它的，其，关于那，由此；

例句
Losses caused as a result thereof shall be borne by the violator.
由此而造成的损失,由违反者承担.

shall

v. 将要，必须，可以，应该；

例句
We shall strike hard, without flinching, at terrorists and those who abet them.
我们要毫不退缩地严厉打击恐怖分子及其帮凶。

issue

n. 问题，议题，（报刊的）期，号，发

例句
The Queen remains above criticism, apart from the issue of her tax liability...
抛开她的纳税义务不谈，女王一直无可指摘。

writs

n. 书面命令，令状( writ的名词复数 )；

例句
Authority thereof shall issue Writs of Election to fill such Vacancies.
管理局须发出令状的选举,以填补这些空缺.

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

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

election

n. 选举，当选，选举权，[神]神的选择；

例句
The country's election commission has advanced the date of parliamentary elections by three days.
该国的选举委员会将议会选举日期提前了3天。

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。

fill

vt.& vi. （使）充满，（使）装满；vt. 满足，配药，（按订单）供应，使充满（感情）；n. 填满…的量，充分，装填物，路堤；

例句
Before leaving, he went into his office to fill in the daily time sheet.
离开前，他到自己的办公室填写了日常考勤表。

such

det. 这样的，那样的，如此，这样；

例句
...abstract principles such as justice...
正义等抽象原则

vacancies

n. 空房间( vacancy的名词复数 )，空虚，空白，空缺；

例句
When vacancies occur, the office puts out feelers to the universities.
有空缺职位的时候，办事处就到各个大学去打探。