A policeman and then a paramedic tried to resuscitate her.是什么意思？

A policeman and then a paramedic tried to resuscitate her.

一名警察和一位护理人员先后试图救活她。

policeman

n. （男）警察，警员，看守矿井的人，[化] 淀帚；

例句
A policeman has been shot dead in an ambush.
一次伏击中一名警察中弹身亡。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

then

adv. 那时，然后，那么，话说回来；adj. 当时的，那时的；

例句
Liz adjusted her mirror and then edged the car out of its parking bay.
莉兹调了调后视镜，将车子挪出了停车位。

paramedic

n. <美>护理人员，医务辅助人员；

例句
A paramedic ambulance crew went to the accident scene but were unable to save Mrs Wilson.
一组急救护理人员赶到事故现场，但没能救活威尔逊太太。

tried

adj. 可靠地，经过考验的；v. 试图，努力( try的过去式和过去分词)，考验，磨炼，审讯；

例句
He was tried in absentia and sentenced to seven years in prison.
他被缺席判处七年监禁。

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。

resuscitate

v. 使复苏，使复兴；

例句
A policeman and then a paramedic tried to resuscitate her.
一名警察和一位护理人员先后试图救活她。

her

pron. (she的宾格)她，(she的所有格)她的，她，指某个国家，（一艘）船；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。