☆ ADVANCED LEVEL : 0 ☆☆ INTERMEDIATE LEVEL : 0 ☆☆☆ ELEMENTARY LEVEL : 0 NONE : 1 ALL : 1

• 기하급수 (幾何級數) : 수나 양이 매우 빠른 속도로 많아짐. Noun
🌏 GEOMETRIC PROGRESSION: Sharp increase in quantity or volume.

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