单语范例（未经PONS编辑处理）
英语
- The keel petal may have a beak or a fringe on the tip.en.wikipedia.org
- The white or greenish corolla has a reflexed standard petal and keel petals that are fused at the bases.en.wikipedia.org
- The keel petals are pointed, and often have purple blotches.en.wikipedia.org
- Stamens and style are within the curve of the keel petal.en.wikipedia.org
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