Salt-water organisms are known to be more resistant to cadmium poisoning than freshwater organisms.
大家公认淡水生物比海水生物更容易镉中毒。
Water could surge over levies and flood estuaries, where organisms depend on a careful balance between salt and freshwater.
汹涌的海水可能会漫过堤岸（原文levies 似有误，估计是levees）和泄洪河口，那里的海水和淡水间保持着细微的平衡，是有机生物体赖以生存之处。
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