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ripen (v.)
[ripen 词源字典]
"to grow ripe," 1560s, from
ripe
+
-en
(1). Related:
Ripened
;
ripening
. Earlier, the verb was simply
ripe
, from late Old English
ripian
, from the adjective.
[ripen etymology, ripen origin, 英语词源]
[ripen 词源字典]