While they enjoy the comfort and banal luxury of their dwelling, they do not realize that they are deprived of the necessities of life.

【译文】

当他们享受着他们住宅的舒适和乏味的奢侈生活时，并未意识到他们被剥夺了生活所必需的东西。

【单词和短语】

banal：陈腐的，平庸的，乏味的（ordinary and not interesting, because of a lack of new or different ideas），

例如：
a banal remark 陈词滥调

There was nothing new in his banal lecture.
他的演讲平庸之极，没有一点新东西。

The restaurant serves banal food.
那家饭馆供应的饭菜全无特色。

banal的名词形式为banality。

necessity：必要的东西，必不可少的事物，必需品（something that you need to have in order to live），

例如：
Good maps are a necessity to travelers.
好的地图是出门旅行必不可少的。

Water is a necessity of life.
生命不可缺水。

What we did was a moral necessity.
我们做了在道义上非做不可的事。