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单词	isthmus
释义	isthmus /ˈɪsθməs / /ˈɪstməs / /ˈɪsməs / noun (plural isthmuses) 1A narrow strip of land with sea on either side, forming a link between two larger areas of land.Land routes are really old, especially through isthmuses.... The British arrived almost a century ago to build the railroad that slices across the isthmus, linking the Gulf of Mexico to the Pacific Ocean. Only one study to date has used calibration points from the fossil record to estimate the divergence of sister species distributed on both sides of the isthmus. 2 (plural isthmi) Anatomy A narrow organ, passage, or piece of tissue connecting two larger parts.Thoracic aortic injuries most often occur at the aortic isthmus in the majority of the cases.... It has 2 lobes, called the right lobe and the left lobe, joined by a narrow isthmus. The cervix forms the lower third, connected by a narrow isthmus to the main muscular body of the uterus. Origin Mid 16th century: via Latin from Greek isthmos. Rhymes Christmas
随便看	handloom hand-loomed hand-loose hand lotion hand luggage handmade handmaid handmaiden handmake handmaking handman hand-mast hand-me-down hand mill hand mold hand money hand mould hand muff hand mule hand nail handoff Hand of Glory hand-operated hand organ hand organist

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