释义：1. Noun. European biennial formerly grown for the blue coloring matter yielded by its leaves.
2. Hand-book of Chemistry by Leopold Gmelin, Henry Watts (1859)“(Roxburgh, Transact, of the Society of Arts, vol. 28.) isatis tinctoria and 
独上高台望四海 手揽云月傍天飞， 落叶重重已十月 归鸟凄凄啼心扉。
简典
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独上高台望四海 手揽云月傍天飞， 落叶重重已十月 归鸟凄凄啼心扉。
