☆ ADVANCED LEVEL : 0 ☆☆ INTERMEDIATE LEVEL : 1 ☆☆☆ ELEMENTARY LEVEL : 0 NONE : 1 ALL : 2

• 땅속 : 땅 밑. ☆☆ Noun
🌏 UNDERGROUND: A place below the ground.

• 뚝심 : 힘든 일을 버티거나 감당해 내는 굳센 힘과 끈기. Noun
🌏 PERSEVERANCE; ENDURANCE: A strong energy and patience to endure or bear a difficulty.

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