to pass one's sell-by date

英語での「 pass one's sell-by date」の定義と意味

to pass one's sell-by date
01

役に立たなくなる, 時代遅れになる

to be no longer effective or of much use
Dialectbritish flagBritish
to [pass] {one's} sell-by date definition and meaning
idiom
His ideas about technology have passed their sell-by date, and now he's struggling to keep up with the industry.
その古いマーケティング戦略はもう役に立たなくなった。
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