Any of numerous American oaks having 4 stamens in each floret,acorns requiring two years to mature and leaf veins usually extending beyond the leaf margin to form points or bristles.是什么意思_Any of numerous American oaks having 4 stamens in each floret,acorns requiring two years to mature and leaf veins usually extending beyond the leaf margin to form points or bristles.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句