The precusors of dinosteranes were dinoflagellate algae developed in the saline and brackish water environments.
在这些环育的类甾烷的先质物。
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In places such as San Diego, which has measly and brackish groundwater and currently imports 90% of its water, the answer must be greater conservation, as much reuse as possible, with most of the rest coming from the sea.
圣地亚哥拥有的地下水储量既少,盐份又高,如今其90%的用水需从外地引入。在像圣地亚哥这样的地方,其对策是尽可能的节约用水、循环利用,而剩余不足的部份则大多从海洋中获取。