They received intelligence of an impending invasion.是什么意思？

They received intelligence of an impending invasion.

他们收到消息,说侵略就在眼前。

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

received

adj. 被一般承认的，被认为标准的；v. 收到( receive的过去式和过去分词 )，接到，接纳，接待；

例句
All this equipment has received international acclaim from the specialist hi-fi press.
这套设备受到全球高保真音响专业报刊的赞誉。

intelligence

n. 智力，聪颖，情报，情报机构；

例句
Webster is retiring as head of the Central Intelligence Agency (CIA).
韦伯斯特即将从中央情报局局长的位子上退职。

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。

an

art. 一（在元音字母前代替不定代词a），一任一某一，一个；

例句
He started eating an apple...
他开始吃苹果。

impending

adj. 即将发生的，迫在眉睫的，迫切的，悬挂的；v. 迫近(impend的现在分词)，悬空；

例句
There were perfectly cogent reasons why Julian Cavendish should be told of the Major's impending return.
要将少校即将返回的消息告知朱利安·卡文迪什是有绝对充足的理由的。

invasion

n. 入侵，侵略，侵害，侵犯，侵袭，[医]发病；

例句
...the threat of invasion by a ruthless and implacable enemy...
残暴无情的敌人发出的侵略威胁