marsh-gas n.沼氣；甲烷marsh-buggy [地球科學]沼澤車marsh trefoil marsh road marsh plants marsh plant marsh ore [鑛物] 沼鉄鑛marsh marigold marsh mallow root 葯用蜀葵根marsh mallow chocolate [經濟學]椰絲彈性巧尅力marsh mallow 葯用蜀葵；草芙蓉marsh land economy [經濟學]窪地經濟marsh land 沼澤地marsh horsetail marsh hen marsh hawk marsh harrier marsh gas power generation 沼氣發電marsh gas 甲烷，[能源] 沼氣marsh elder