| 单词 | 砂粒 |
| 释义 | 〔sand〕The loose, granular, gritty particles in an hourglass.砂粒：砂漏中的疏松的、微小的、粒状的颗粒〔grit〕Minute rough granules, as of sand or stone.砂，砂砾，砂粒：细小的粗颗粒，如砂和石头粒〔tubeworm〕Any of various annelids living within tubular cases that they secrete or glue together from grit.管虫：生长在管状容器内的各种环虫，它们分泌并粘在一起以防止砂粒〔gizzard〕A modified muscular pouch immediately behind the stomach in the alimentary canal of birds, having a thick lining and often containing ingested grit, which aids in the mechanical breakdown of seeds before digestion.砂囊，胗：紧靠在鸟类食道的胃部后面的变化的肌肉小袋，有厚的衬层并含有摄取的砂粒，有助于在消化之前磨碎种子 |
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