☆ ADVANCED LEVEL : 0 ☆☆ INTERMEDIATE LEVEL : 0 ☆☆☆ ELEMENTARY LEVEL : 0 NONE : 3 ALL : 3

• 나트륨 (Natrium) : 바닷물, 소금 등에 많이 들어 있는 흰색의 금속 원소. Noun
🌏 NATRIUM; SODIUM: A white metal element found in large amounts in sea water, salt, etc.

• 칼륨 (Kalium) : 이온으로서 나트륨과 함께 체내의 수분 양과 산이나 알칼리 균형을 조절하는 알칼리 금속 원소의 하나. Noun
🌏 POTASSIUM; KALIUM: An ion and one of the alkali metal elements, which adjusts the quantity of water and balance of acid and alkali within the body, together with sodium,

• 볼륨 (volume) : 사물이나 몸의 부피에서 오는 느낌. Noun
🌏 VOLUME: A feeling given by the bulk of a thing or body.

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