| 单词 | calcareous |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔calc-tufa〕Calcareous tufa, a porous or spongy deposit of calcium carbonate found in calcareous mineral springs.多孔状凝灰岩：石灰质的凝灰岩，碳酸钙多孔或有吸收性的沉淀物，出现在石灰性矿物泉中美国传统〔coralline〕Any of various red algae of the family Corallinaceae whose fronds are covered with calcareous deposits.红藻：一种属珊瑚藻科的红藻，其藻体外覆盖有钙质沉积物美国传统〔coral〕Any of numerous chiefly colonial marine polyps of the class Anthozoa that secrete such calcareous skeletons.珊瑚虫：任一种珊瑚虫纲的分泌这种石灰质骨骼的众多珊瑚虫，主要是集群菌落的海生水螅型珊瑚虫美国传统〔cuttlebone〕The calcareous internal shell of a cuttlefish, used as a dietary supplement for cage birds or ground into powder for use as a polishing agent.乌贼骨：乌贼的钙质内壳，作为笼中鸟的饮食补充物或把它碾碎成粉用作上光剂美国传统〔dentin〕The main, calcareous part of a tooth, beneath the enamel and surrounding the pulp chamber and root canals.牙质，齿质：牙齿主要的钙质部分，在珐琅质下面，牙髓周围，植根于牙床的管道内美国传统〔enamel〕Anatomy The hard, calcareous substance covering the exposed portion of a tooth.【解剖学】 珐琅质，牙釉质：牙暴露部分表面的硬的钙质的覆盖层美国传统〔loess〕A buff to gray windblown deposit of fine-grained, calcareous silt or clay.黄土：一种风沉积而成的颗粒细小、含钙质的沙或泥土，呈浅黄色或黄褐色美国传统〔oolite〕A small round calcareous grain found, for example, in limestones.鲕粒岩：含有圆形小颗粒的石灰质岩石，如在石灰岩中美国传统〔otolith〕One of many minute calcareous particles found in the inner ear of certain lower vertebrates and in the statocysts of many invertebrates.耳石：某些低等脊椎动物的内耳和许多无脊椎动物的平衡囊中的细小石灰质微粒美国传统〔sea urchin〕Any of various echinoderms of the class Echinoidea, having a soft body enclosed in a round, symmetrical, calcareous shell covered with long spines.海胆：任一种棘皮纲的棘皮动物，具有被圆形对称的螺旋状贝壳包含的柔软躯体，贝壳表面布满棘刺美国传统〔seashell〕The calcareous shell of a marine mollusk or similar marine organism.海贝壳：海栖软体动物或类似的海洋生物的钙质贝壳美国传统〔stone canal〕A calcareous duct in echinoderms that leads from the madreporite to a ring-shaped canal around the mouth.石管：棘皮动物体内由筛板通向口部附近环状管道的钙质的导管美国传统〔stony coral〕A coral with a hard calcareous skeleton, especially of the order Scleractinia.石珊瑚：有硬质钙壳的珊瑚，尤指海葵目珊瑚美国传统〔tufa〕The calcareous and siliceous rock deposits of springs, lakes, or ground water.泉华：泉、湖或地下水中的石灰质和硅质岩石沉积物美国传统 |
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