基本解释绿花马利筋英汉例句双语例句Milkweed is a tough old plant, sending gray-green javelins up in thick stands that can tower head-high by fall.朱莉说，马利筋是一种生命力极强的植物，生出一丛丛灰绿色标枪似的茎，到了秋季可以长得一人多高。词组短语短语green mature milkweed 绿花马利筋