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An artery is one of the tubes inside your body that carries blood away from your heart to the rest of your body (blood vessels carrying blood back to the heart are called veins instead). Outside of the body, "artery" is also used to describe a very important main road or route that a lot of traffic flows through, the way blood flows through a real artery — people say "a major traffic artery" about a busy highway.
動脈；（比喻）交通要道
原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
arterynoun/ˈɑː.tə.ɹi/
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anatomymedicinesciencesAny of the muscular- and elastic-walled blood vessels forming part of the circulation system by which blood is conveyed away from the heart regardless of its oxygenation status; see pulmonary artery.
- As we age, the major arteries of our bodies frequently become thickened with plaque, a fatty material with an oatmeal-like consistency that builds up along the inner lining of blood vessels. The reason plaque forms isn’t entirely known, but it seems to be related to high levels of cholesterol inducing an inflammatory response, which can also attract and trap more cellular debris over time.
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transportA major transit corridor in a system of roads, rivers, or railway lines.
- But the importance of the railways as main arteries of the national economy remains undimmed, just as their fascination for the railway enthusiast is surely undiminished.
- Premier Chiang Ching-kuo said October 12 that the North-South Freeway, a 373-kilometer (235-mile) artery along west Taiwan, will have to be completed on schedule by 1978.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。