He became aware of the proximity of the Afghans...是什么意思？

He became aware of the proximity of the Afghans...

他意识到阿富汗人近在咫尺。

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

became

v. 变为，成为（ become的过去式 ）；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

aware

adj. 意识到的，知道的，觉察到的；

例句
He was acutely aware of the odour of cooking oil...
他闻到一股浓浓的油烟味。

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。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

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

proximity

n. 接近，邻近，接近度，距离，亲近；

例句
What drew him to the area was its proximity to central London.
吸引他到该地区的原因是那里靠近伦敦市中心。

Afghans

n. 阿富汗人，阿富汗语，阿富汗毛毯( Afghan的名词复数 )；

例句
Their costly and futile attempt to subjugate the Afghans lasted just 10 years.
他们大动干戈想要控制阿富汗地区，但只持续了10年就无果而终了。