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way; method; means; resource; remedy
(technical) specification
雨が降ったら仕様がないね。
If it rains, there's nothing we can do.
顧客から仕様変更の依頼が来た。
A request for specification changes came from the customer.
こう決まった以上、仕様がない。
Since it's been decided, there's no helping it.