One theory behind savanna formation is that wet forest species are unable to withstand the dry season, and thus savanna, rather than rain forest, is favored on the site.

热带草原形成的理论之一，就是湿润的森林物种无法承受旱季，因此这更有利于热带草原，而不是热带雨林的形成。

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If one focuses on the wet months, one calls the Maya homeland a "seasonal tropical forest"; if one focuses on the dry months, one could instead describe it as a "seasonal desert".

如果一个人侧重雨季，就会把玛雅故土称为“季节性热带森林”；而如果侧重旱季，就可以把它描述为“季节性沙漠”。

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Some savannas occur on wet, waterlogged soils; others on dry, sandy, well-drained soils.

一些稀树大草原生长在潮湿、涝渍的土壤上；其它则在干燥、多沙、排水良好的土壤上。

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Or an industry critic might see a dry-gas report, compare it with another estimate made on a wet basis, and conclude that production is falling short of expectations.

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