tall Old World biennial thistle with large clasping white-blotched leaves and purple flower heads; naturalized in California and South America
双语例句
Silymarin is a kind of favonolignan compound, extracted from the seed capsule of plant Silybum marianum,It is yellow powder with a bitter taste. 水飞蓟素是黄酮木脂素类化合物，是从菊科药用植物水飞蓟种子的种皮中提取出来的，呈黄色粉末，味苦。
