| 单词 | Centaurea nigra |
| 释义 | Centaurea nigra (once / 1181932 pages) n WORD FAMILY Centaurea nigra n a weedy perennial with tough wiry stems and purple flowers; native to Europe but widely naturalized Syn|Hyper black knapweed, hardheads, lesser knapweed knapweed any of various plants of the genus Centaurea having purple thistlelike flowers |
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