hubieran extinguido
-they/you had extinguished
Past perfect subjunctiveellos/ellas/ustedesconjugation ofextinguir.

extinguir

Saben, si los dinosaurios no se hubieran extinguido, muy probablemente no existiríamos.
You know, if the dinosaurs hadn't become extinct, it's very likely that we wouldn't exist.
En su Nuevo libro, Flourish, el Dr. Martin Seligman escribe que si maximizar la felicidad fuera la única explicación sobre cómo escogemos vivir, nuestras especies se hubieran extinguido desde hace mucho tiempo.
In his new book, Flourish, Dr. Martin Seligman writes that if maximizing happiness were the sole explanation for how we choose to live, our species would have become extinct a long time ago.
Para las aves, la reproducción en cautiverio y la reintroducción ha ayudado a prevenir la extinción de seis de cada 16 especies, las que probablemente se hubieran extinguido en la ausencia de dichas medidas de conservación [4].
For birds, conservation breeding and reintroduction helped prevent the extinction of six out of 16 species that would probably have gone extinct in the absence of conservation measures [4].
¿Cuántas vidas se hubieran salvado, cuántas posibilidades no se hubieran extinguido?
How many lives saved, how many possibilities unextinguished?
Además, es probable que los dinosaurios no se hubieran extinguido todos a la vez.
Besides, chances are that dinosaurs would not have become extinct all at once.
Estos hallazgos no podrían realizarse si los dinosaurios realmente se hubieran extinguido hace 65 millones de años.
These findings would not be possible if the dinosaurs really became extinct 65 million years ago.
Este sería el caso si se hubieran extinguido ya todos los que estaban en la fase intermedia, es decir, los dotados de un sistema nervioso centralizado que no dé lugar a la consciencia.
This would be the case if all those that were in an intermediate stage, that is, having minimally centralized nervous systems that don't give rise to consciousness, were already extinct.
Este sería el caso si se hubieran extinguido ya todos los que estaban en la fase intermedia, es decir, los dotados de un sistema nervioso centralizado que no dé lugar a la consciencia.
This would be the case if all those that were in the intermediate stage, that is, having minimally centralized nervous systems that don't give rise to consciousness, were already extinct.
Nosotros tampoco podemos hacer que los seres vivientes que hubieran aparecido en otros planetas y después se hubieran extinguido (por cualquier razón) pudieran ser recuperados desde la catástrofe solo porque nosotros no deseamos estar solos en el Universo.
We cannot do either that the living beings that had been synthesized on other planets and later had been extinguished (by any reason) could be recuperated from the catastrophe only because we do not wish to be alone in the Universe.
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to drizzle