a passing fad
fashion fad
dietary fads
1. Many fashion fads come and go very quickly.
许多时尚潮流来得快去得也快。
2. These dietary fads can sometimes be quite dangerous.
这些饮食狂热有时可能非常危险。
3. The 1960s were full of cultural fads.
20世纪60年代充满了各种文化狂热现象。
A: Do you think this new social media app will last?
A：你认为这个新的社交媒体应用会持久吗？
B: No, it seems like just another one of those passing fads.
B：不，它看起来就像是又一个昙花一现的狂热现象。
1) 短暂的狂热现象
2) 时下的流行趋势
3) 暂时的时尚
1. 一时的狂热
e.g.
Social media has accelerated the rise of many new fads.
社交媒体加速了许多新狂热现象的兴起。
noun
1. A craze or intense enthusiasm for something that is short-lived.
Synonym: craze, vogue, trend