详细解释:n. 风滚草
英语解释：
名词 tumbleweed:
any plant that breaks away from its roots in autumn and is driven by the wind as a light rolling massprickly bushy Eurasian plant; a troublesome weed in central and western United States同义词：Russian thistle, Russian tumbleweed, Russian cactus, Salsola kali tenuifolia