| 单词 | 无齿 |
| 释义 | 〔turtle〕Any of various aquatic or terrestrial reptiles of the order Testudines (or Chelonia), having horny toothless jaws and a bony or leathery shell into which the head, limbs, and tail can be withdrawn in most species.龟：龟鳖目的各种水生或陆生的爬行动物，有角质无齿的颌，骨质的或似皮革的壳，许多品种的龟可将头、四肢和尾缩进壳中〔mussel〕Any of several freshwater bivalve mollusks of the generaAnodonta and Unio, found in the central United States, that burrow in the sand or mud of lakes and streams. 淡水蚌：发现于美国中部的无齿贝属 和 珠蚌属 几种淡水双壳软体动物的一种，在湖和河中的沙中或泥中挖洞 〔edentate〕Of or belonging to the order Edentata, which includes mammals having few or no teeth, such as anteaters, armadillos, and sloths.贫齿目的：属于贫齿目的，包括无齿和少齿的哺乳动物，如食蚁兽、犰狳和树懒〔sloth〕Any of various slow-moving, arboreal, edentate mammals of the family Bradypodidae of South and Central America, having long hooklike claws by which they hang upside down from tree branches and feeding on leaves, buds, and fruits, especially:树懒：生活在美洲中部和南部的树懒科哺乳动物之一，移动缓慢，栖息在树上，无齿目，爪子长而有钩，它们用爪子倒悬在树枝上，吃树叶、嫩芽和果实，尤指： |
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