| 单词 | convex edge |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔crescent〕Something having concave and convex edges terminating in points.新月形物：凹边和凹边汇合成点的物体美国传统〔crescent〕The figure of the moon as it appears in its first or last quarter, with concave and convex edges terminating in points.蛾眉月：月亮在上弦时或下弦时的形状，其凹边和凹边均汇合成点美国传统 |
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