因此，当瓜类植物的根在雨水浸湿的土壤中时，它们的光合作用率低于通常水平。
It follows that melon plants have a lower-than-usual rate of photosynthesis when their roots are in rain-soaked soil.
在雨水浸泡的土壤中，低氧条件下的瓜类植物的根部效率很低。
The roots of melon plants perform less efficiently under the low-oxygen conditions present in rainsoaked soil.
西北太平洋地区雨水充足，到处都是蕨类植物和红杉林，在那儿贝拉遇到了敌对的两派势力：吸血鬼和狼人。
Pacific Northwest is flooded with rain and ferns and redwood forests, where Bella encounters two rival gangs: vampires and werewolves.
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