Many people took second jobs as a safeguard against unemployment...是什么意思？

Many people took second jobs as a safeguard against unemployment...

许多人为防失业都干两份工作。

many

adj. 许多，多的；pron. （与复数动词连用）大多数人；

例句
There are many people who still find the act of abortion abhorrent.
仍有很多人对堕胎行为表示厌恶。

people

n. 人，人类，居民，人民，种族；vt. 居住于，布满，使住满人，在…殖民，把动物放养在；

例句
Most people have very little difficulty in seeing why a Van Gogh is a work of genius.
多数人不难理解为什么凡·高的作品是天才之作。

took

v. 拿( take的过去式 )，接受，学习，取得；

例句
The interview took place on a Friday afternoon...
采访是在一个星期五的下午进行的。

second

n. 秒，瞬间，次货，第二份食物；adj. 第二的，次要的，居第二位的，另外的；adv. 第二，其次，以第二位；vt. 支持，临时调派，附议，赞成提案；

例句
...a second career which absorbed her more completely than her acting ever had.
比演艺生涯更让她投入的又一职业

jobs

n. （一件）工作( job的名词复数 )，职责，职业，（作为一个单元处理的）作业；

例句
It is anticipated that the equivalent of 192 full-time jobs will be lost...
预计将失去相当于192份全职工作的岗位。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

safeguard

n. 保护，保卫，防护措施，安全设施；vt. 保护，保卫，防护；

例句
The problem was to safeguard sites from encroachment by property development.
问题是要保护遗址免受房地产开发商的侵占。

against

prep. 反对，对…不利，紧靠，以防；

例句
His hand brushed against hers; it could have been either accidental or deliberate.
就在有意无意间，他的手轻轻拂过她的手。

unemployment

n. 失业，失业率，失业状况，失业人数；

例句
He will appeal to the state for an extension of unemployment benefits...
他将呼吁国家延长领取失业救济金的时限。