treacle mustard
柯林斯詞典
1. N a N temperate cruciferous annual plant, Erysimum cheiranthoides, having small yellow flowers. It is a common weed in cultivated ground 糖芥
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1. N a N temperate cruciferous annual plant, Erysimum cheiranthoides, having small yellow flowers. It is a common weed in cultivated ground 糖芥