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percolate (v.)
[percolate 词源字典]
1620s, a back-formation from
percolation
, or else from Latin
percolatus
, past participle of
percolare
"to strain through." Figurative sense by 1670s. Related:
Percolated
;
percolating
.
[percolate etymology, percolate origin, 英语词源]