N-COUNT 一时的风尚;风靡一时之物 You use fad to refer to an activity or topic of interest that is very popular for a short time, but which people become bored with very quickly. 一时的风尚;风靡一时之物
Hamnett does not believe environmental concern is a passing fad.
ADJECTIVE | PREPOSITIONADJECTIVE➤current, latest, new當前的時尚;最新時尚;新時尚▸➤passing一時的流行▸➤management管理潮流▸➤food (especially BrE) 食物盲從◇Most children have food fads at some time.大多數孩子在某一階段都會盲從某些食物。PREPOSITION➤fad for對⋯的狂熱◇the fad for cosmetic surgery整容手術熱潮