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/prəˈɡreʃən/
A series of things that happen one after another, usually moving in some direction — like steps toward a goal, or in a disease. In music, a "chord progression" is the sequence of chords a song moves through. It's also used for steady development over time, like career progression — moving up step by step.
一連串的發展、演進；（音樂）和弦進行
複數 progressions
組成progress + "-ion."
原始詞典資料6 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。
progressionnoun/pɹəˈɡɹɛʃn̩/
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The act of moving from one thing to another.
- Make a natural progression from player to coach
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The act of moving forward or proceeding in a course; motion onward.
- The lowest risk for kidney disease progression seemed to be at levels of current systolic blood pressure of 110 to 129 mm Hg.
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mathematicssciencesA sequence obtained by adding or multiplying each term by a constant.
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Development, increase, evolution.
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entertainmentlifestylemusicA chord progression.
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exercisehobbieslifestyleThe process of making an exercise more strenuous by manipulating the details of its performance like loaded weight, range of motion, angle, speed.
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。