形容词
1. 有关的；相关的
Something that is pertinent is relevant to a particular subject.
1. being of striking appropriateness and pertinence
e.g. the successful copywriter is a master of apposite and evocative verbal images
an apt reply
2. having precise or logical relevance to the matter at hand
e.g. a list of articles pertinent to the discussion
remarks that were to the point