| 单词 | 顶针 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔root cap〕A thimble-shaped mass of cells that covers and protects the root tip.根冠：覆盖并保护根尖部分的类似顶针的细胞群美国传统〔thimbleful〕The amount that a thimble can hold.少量：一个顶针能盛下的量美国传统〔thimble〕A small cup made of metal, ceramic, plastic, leather, or other hard material, worn for protection on the finger that pushes the needle in sewing.顶针：用金属、陶瓷、塑料、皮革或其它硬材料制作的小杯状物，缝制时戴在手指上起保护作用美国传统 |
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