| 释义 |
co·arc·ta·tion AHD[kō'ärk-tāʹshən] D.J.[ˌkəʊɑːkˈteɪʃən]K.K.[ˌkoɑrkˈteʃən]n.（名词）- A narrowing or constricting, especially of the aorta or of a blood vessel.变窄：尤指血管或大动脉的变窄或收缩
- The state of being enclosed in an oval, horny case. Used of an insect pupa.封闭状态：封闭在椭圆形角质壳内的状态。用于一虫蛹
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