n.yellow-flowered European plant that grows on old walls and in waste places; an adventive weed in North America
同义词：Diplotaxis muralisDiplotaxis tenuifolia
英汉双解大词典
wall rocket
1.
N（名词）
any of several yellow-flowered European plants of the genus Diplotaxis, such as D. muralis, that grow on old walls and in waste places: family Brassicaceae (crucifers) 芸苔属作物