| 词汇 | valerian | 
| 释义 | valerian  noun [ U ]  biology specialized uk/vəˈlɪə.ri.ən/ us/vəˈlɪr.i.ən/  缬草(一种开白色或粉色小花的植物,其根可以入药,有镇静和催眠的作用) a plant with small white or pink flowers and a root that is used in medicines, especially as a sedative (= drug to calm you or make you sleep) | 
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