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A single-breasted jacket or suit has one line of buttons down the front, and the two sides of the coat meet in a simple overlap. Most ordinary office suits look like this. The opposite is double-breasted, with two lines of buttons and more cloth across the chest. Though actually, “breast” here is an old clothes word for the front of a jacket, not a lesson about the body. It is a tailor’s word, a bit specialised, but it is the word a shop will use.
單排扣（外套／西裝）
組成single + breasted. Breast here means the front of a coat, not the body part in a medical sense.
同家族的字
- single“one” — here, one row of buttons
- double-breastedthe opposite style, with two rows of buttons
原始詞典資料1 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。
single-breastedadj
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Closing with a single row of buttons that form a narrow overlap.
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。