The flower bud of a water lily 百合 opens at sunset since .its opening is triggered(commence) .by the decreased light.
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TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.
HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?
WhileBillieHolidaydidnotinventthemusiccalled"theblues",shemostassuredlyhelpedpopularizeit.