late 14c., "jaw, jawbone," from Middle French mandible and directly from Late Latin mandibula "jaw," from Latin mandere "to chew," from PIE root *mendh- "to chew" (cognates: Greek mastax "the mouth, that with which one chews; morsel, that which is chewed," masasthai "to chew," mastikhan "to gnash the teeth"). Of insect mouth parts from 1826.
实用例句
1. But the retrusion of alveolar mandible led to chin protrusion.
前颅底和下颌骨发育正常,而下牙槽突代偿性后缩可导致成年腭裂患者的假性颏前突.
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2. There is no long , mandible of lower jaw in the whale.
垂下来的长条状的骨头代替牙齿,它就是须鲸, 是世界上最大的动物.
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3. The upper lip and mandible of the insect are injured.
这个昆虫的上唇和上颚都受了伤.
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4. The position relation between mandible and maxilla or cranioaural.
下颌骨对上颌骨乃至颅骨的位置关系.
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5. There is no long, slender mandible of lower jaw in the whale.
