高级英语第一册3.沙漠之舟 ... methane ( n.) :a colorless，odorless，inflammable gaseous hydrocarbon，CH4，present in natural gas and formed by the decomposition of vegetable matter，as in marshes and mines. or produced artificially by heating carbon monoxide and hydrogen over a nickle catalyst甲烷；沼气 landfill ( n.) :the disposal of garbage or rubbish by burying it under a shallow layer of ground埋入地下的垃圾 paddy ( n.) :rice in the husk，growing or gathered稻，谷 ...
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