Any of several tick trefoils, especially Desmodium tortuosum or D. purpureum, grown for forage or as a cover crop in subtropical and tropical regions.是什么意思_Any of several tick trefoils, especially Desmodium tortuosum or D. purpureum, grown for forage or as a cover crop in subtropical and tropical regions.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句