relevant /ˈrɛləvənt/ adjective Learner's definition of RELEVANT
[more relevant; most relevant]
: relating to a subject in an appropriate way有关的;切题的;适宜的 —
often + to — opposite irrelevant — relevance
/ˈrɛləvəns/ or relevancy /ˈrɛləvənsi/ noun [noncount]