certifiable

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Non-certifiable: Agencies generally do not approve, recommend, or validate particular solutions.
非擔保性：代理商一般不贊成、推薦，或確認某種方案。
All his published designs are technically certifiable by the FAA, and can be implemented in airplanes already in use.
他的所有的公開設計的技術都是得到美國聯邦航空侷認可的。在現有的飛機上也能得到實踐。
If anything, when I see a natural label, it makes me all the more skeptical of the product, as it more often tends to be a sign of cynical marketing than any certifiable purity.
如果我看到有任何一樣東西粘貼了“天然”之類的標簽，那反倒使我更加懷疑其“天然性”。因爲那會讓人更容易想到，那衹不過是商家的一種營銷伎倆罷了，根本沒法確保其純淨與否。

The same concept applies to online education: consumers are willing to pay much more for media that provides certifiable education than they pay for a Netflix movie.
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"Christina" is one of the most elegantly simple melodies in jazz, as well as a certifiable standard from bassist Buster Williams, who mentored Blackout members Stefon Harris and Casey Benjamin.
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Like the course offerings at most continuing education departments and university extensions: tastes of the real stuff, a window into the real thing, but nothing that made deep, holistic, and certifiable sense.
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If you describe someone as certifiable, you think that their behaviour is extremely unreasonable or foolish.