adversity 逆境
A good friend will not desert you in time of adversity.
好朋友从来不会在你正处逆境的时候离开你。
affinity 密切关系
The French and Italian languages have many affinities with each other.
法语和意大利语关系十分密切。
affluent 富裕的
The young man spends money like water in that he comes from an affluent family.
这位年轻男士花钱如流水，因为他的家族十分地富有。
allude 暗指
She didn't mention Mr. Smith by name, but it was clear she was alluding to him.
她没有指姓点名，但是很明显她说的就是史密斯先生。