这似乎是合理的，但它仍然是一种理论，这个理论是基于我们对陆生动物的更全面的认识。
Plausible as this seems, it is still a theory and based on our more comprehensive knowledge of land-based animals.
作为一种思潮，联合进化理论已经出现了至少十年，或者将近30年——这基于你向谁提出这个问题。
As a thought exercise, co-evolution has been around for less than a decade, or as much as 30 years, depending on who you ask.
作为一种思潮，联合进化理论已经出现了至少十年，或者将近30年——这基于你向谁提出这个问题。
As a thought exercise, co-evolution has been around for less than a decade, or as much as 30 years, depending on who you ask.
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