Any of numerous plants of the genus Asclepias, having milky juice, usually opposite leaves, variously colored flowers grouped in umbels, and pods that split open to release seeds with downy tufts.是什么意思_Any of numerous plants of the genus Asclepias, having milky juice, usually opposite leaves, variously colored flowers grouped in umbels, and pods that split open to release seeds with downy tufts.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句