| 词汇 | trickle |
| 词根词缀 | 词源： trickle (v.) late 14c., possibly an aphetic variant of stricklen "to trickle," a frequentative form of striken "to flow, move" (see strike). The noun is 1580, from the verb. Trickle-down as an adjectival phrase in an economic sense first recorded 1944; the image had been in use at least since Teddy Roosevelt. |
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