How to protect the environment?: , save electricity, , use renewable sources of energy, sort out/separate rubbish, use public transport, conserve, environmental problems: global warming, , greenhouse effect, , water contamination, deforestation, endangered species, waste, landfill/rubbish dump, natural disasters: flood, earthquake, tsunami, volcanic eruption, hurricane, avalanche, wild fires, natural places: mountains, river, valley, peninsula, island, lake, waterfall,

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恢復自動保存: ?