isthmus
/ˈɪsməs/ (bre, ipa) · /ˈɪsməs/ (ame, ipa) · /ˈi-sməs/ (ame, mw)
isthmus — 名詞
- isthmussingular
- isthmusesplural
1. A narrow strip of land that has water on both sides and connects two larger land
地峽
連接兩塊較大陸地的狹長陸地
A narrow strip of land that has water on both sides and connects two larger land masses.
The Isthmus of Panama separates the Pacific Ocean from the Atlantic Ocean and links North America to South America.
巴拿馬地峽分隔太平洋與大西洋，並連接北美洲與南美洲。
isthmus of + [place name] pattern
Kenji's geography class studied how the Kra Isthmus in Thailand connects the Malay Peninsula to the mainland of Asia.
Kenji 的地理課上研究了泰國的克拉地峽如何連接馬來半島與亞洲大陸。
countable noun modified by place name
A wide canal was dug across the narrow isthmus so that ships could cross between the two oceans.
人們在狹長的地峽上開鑿了一條寬闊的運河，以便船隻穿梭於兩大洋之間。
The ancient city of Corinth once controlled all trade crossing the isthmus that joined the Peloponnese to the Greek mainland.
古柯林斯城曾掌控所有穿越地峽的貿易往來，這條地峽連接了伯羅奔尼撒半島與希臘本土。
Roads and railways running along the isthmus connect ports on opposite coasts of the country.
沿著地峽鋪設的公路與鐵路，連接了該國兩側海岸的港口。
- land bridge
A more general, less technical term often used in archaeology or ecology to describe a connecting strip of land.
- neck of land
Literary or old-fashioned term for a narrow strip of land connecting two larger areas.
文法句型
isthmus + of + [place name]
用法筆記
Commonly used with the pattern 'isthmus of + proper name' (e.g. the Isthmus of Suez). When the name is well-known, 'isthmus' often follows a definite article.
常見錯誤
2. A narrow section of an organ or body structure that connects two larger parts, s
峽部
器官中連接兩部分的狹窄結構
A narrow section of an organ or body structure that connects two larger parts, such as the thyroid isthmus or the isthmus of the fallopian tube.
The ultrasound showed that the isthmus of Emma's thyroid gland was slightly thicker than normal.
超音波顯示 Emma 的甲狀腺峽部比正常略厚。
isthmus + of + [organ] for anatomical location
Dr. Okafor pointed to the narrow isthmus connecting the two lobes of the thyroid during the anatomy lecture.
Okafor 醫師在解剖課上指著連接甲狀腺兩葉的狹窄峽部。
isthmus connecting + [two parts]
A blockage in the isthmus of the fallopian tube can prevent an egg from reaching the uterus.
輸卵管峽部的阻塞可能導致卵子無法抵達子宮。
The surgeon carefully avoided cutting the isthmus of the corpus callosum during the brain operation.
外科醫師在腦部手術中小心避開胼胝體峽部。
In the developing embryo, the isthmus of the midbrain acts as a narrow boundary between two main brain regions.
在發育中的胚胎裡，中腦峽部扮演兩個主要腦區之間的狹窄邊界。
- constriction
A general term for a narrowing; less precise but can describe the same anatomical feature.
- passage
A broader term that may refer to a channel or duct rather than a solid tissue connection.
- lumen
The inside open space of a tubular organ — conceptually opposite to the narrow connecting tissue of an isthmus.
文法句型
isthmus + of + [body part]
用法筆記
Always used with a definite article or possessive determiner followed by 'of' (e.g. 'the isthmus of the thyroid', 'the aortic isthmus'). Found mainly in medical textbooks, surgical reports, and anatomy exam contexts.