pertinent
adjective formal uk/ˈpɜː.tɪ.nənt/ us/ˈpɝː.tən.ənt/
有关的，直接相关的
relating directly to the subject being considered
a pertinent question/remark 切中要害的问题／评论
Chapter One is pertinent to the post-war period. 第一章讲述的是战后时期。
Synonyms: apposite apropos relevant
Opposite: irrelevant
Compare: impertinent
Note: The opposite is irrelevant. Do not confuse with impertinent (= rude).