来自拉丁语isthmus,来自希腊语isthmos,狭窄的过道，地狭，特别是古希腊城邦柯林斯地狭，可能来自希腊语eimi,走，通过，词源同ire(拉丁语，走),exit,issue，-thmo,名词后缀。

1. North America is connected with South America by the Isthmus of Panama.

巴拿马海峡把北美同南美连接起来.

2. The north and south of the island are linked by a narrow isthmus.

岛的北部和南部由一条狭窄的地峡相连.

3. It was the neck of land which we call the Isthmus of Panama.

这个陆地的狭窄地带,我们称之为巴拿马地峡.

4. This fact has led naturalists to believe that the Isthmus was formerly open.

使许多自然学者相信这个地蛱在以前原是开通的.

5. Objective : To analyze the clinical significance of modified thyroidectomy by trans - isthmus approach.

目的: 探讨经峡部径路行甲状腺手术的临床价值.