单词	counterflow
释义	counterflow noun coun·​ter·​flow ˈkau̇n-tər-ˌflō  : the flow of a fluid in opposite directions (as in an apparatus) Example Sentences Recent Examples on the Web Elsewhere, there is a pool with an adjustable floor and counterflow on the aft deck. Rachel Cormack, Robb Report, 7 Apr. 2021 Word History First Known Use 1870, in the meaning defined above
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