In calculating the daily calorie requirements for an individual, variations in body size, physical activity, and age should be taken into account.
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The flower bud of a water lily 百合 opens at sunset since .its opening is triggered(commence) .by the decreased light.
Formulatedin1823,theMonroeDoctrineassertedthattheAmericaswerenolongeropentoEuropeancolonization.
Urban renewal programs strive to upgrade areas that are becoming slums.
Eyespots, the most rudimentary eyes, are found in protozoan原生动物 flagellates 鞭毛虫 , flatworms 扁形虫 , and segmented worms片段 蠕虫 .
MaryMcCarthyssatires讽刺文学arecouchedinaprosestylethathasaclassicprecision.