Well, before rain forests, ancestors of trees like cypress, pine, and spruce dominated the land — but they were conservative when it came to using (and losing) water, so the air tended to be dry, meaning less rain.

在雨林之前，陆地被树木祖先如柏树、松树和云杉占据，但它们用水和蒸发水时都很保守，因此空气往往是干燥的，这意味着更少的降雨。