☆ ADVANCED LEVEL : 1 ☆☆ INTERMEDIATE LEVEL : 0 ☆☆☆ ELEMENTARY LEVEL : 0 ALL : 1

• 흥얼거리다 : 흥이 나거나 기분이 좋아서 계속 입속으로 노래를 부르다. ☆ Verb
🌏 HUM: To emit a low, droning sound continuously, out of joy or excitement.

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