greennessn.
'grinnɪs
中文n. 绿色；未熟；新鲜
词根词源
greenness (n.)Old English grennes "green color; quality of being green," in plural, "green things, plants;" see green (adj.) + -ness. Meaning "immaturity" is from early 15c. Walpole coined greenth (1753) in the same sense.
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