(每日一詞）derivative

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Derivative /d??r?v?t?v/ n. 衍生物, 衍生品; 金融衍生產品

Meaning: a form of something, such as a word, made or developed from another form 衍生物, 衍生品

meaning: a financial product such as an option (=the right to buy or sell something in the future) that has a value based on the value of a mother product, such as shares or bonds 金融衍生產品

1) 前綴: de- 向下

2) 詞根: riv-表示river 河流

3) 后綴：-ative 可做名詞后綴（-ate + ive 合成 detective)

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