under water environment protecting
... 海底生态系统 under water ecosystem 海底环境保护 under water environment protecting 体温过低 hypothermia ...
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环境保护组织绿色和平组织称，他们已开始向瑞典西南海岸海底投放巨石，防止渔船在海底捕鱼。
The environmental group Greenpeace says it has started dropping boulders onto the sea floor of Sweden southwestern coast to prevent fishing boats from dragging nets along the sea bed.
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