单词	flashboard
释义	flashboard noun flash·​board ˈflash-ˌbȯrd  : one or more boards projecting above the top of a dam to increase the depth of the water Example Sentences Recent Examples on the Web During that week, engineers would also increase the height of the flashboard structure to 8 feet from 4 feet, replacing the plywood with metal. John D'anna, azcentral, 18 July 2019 On July 15, the lake level peaked, just inches from the top of the new 8-foot metal flashboards, and less than 7 feet from the top of the dam. John D'anna, azcentral, 18 July 2019 Word History First Known Use circa 1774, in the meaning defined above
随便看	activest activewear activism activisms activist activistic activists activities activity activity cage activity coefficient activity group psychotherapy activity group therapy activize activized activizes activizing actomyosin actomyosins Acton actons actor actor-proof actorish actorly

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