- Any of various densely branched annual plants, such as amaranth and Russian thistle, that break off from the roots at the end of the growing season and are rolled about by the wind.广布苋，风滚草：多种枝条茂密的一年生植物中的一种，如苋和细叶钾猪毛菜，在植物生长期的末期，从根部脱离，被风吹动，在田野里滚动
| 单词 | tumbleweed |
| 释义 | tum·ble·weed
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