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melioration ['mi:lɪə'reɪʃ(ə)n] n
gen. 改善〔进,良〕
agric. 土壤改良 (melioratio)
eng.geol. 改良
hydroel.st. 土壤改良; 改良
tech. 改善; 改进
melioration: 6 phrases in 5 subjects
Architecture1
Earth sciences1
Electronics1
General1
Technology2