noun 다운로드 🔗공유 헬륨 The second lightest chemical element (symbol He) with an atomic number of 2 and atomic weight of 4.002602, a colorless, odorless and inert noble gas. Examples : "The birthday balloons were filled with helium, which made them float to the ceiling. " 생일 풍선은 헬륨으로 채워져 천장으로 떠올랐다. element chemistry substance material physics science AI와 채팅어휘 게임독해 연습
noun 다운로드 🔗공유 헬륨 A form or sample of the element. Examples : "The science experiment required a sample of helium. " 과학 실험에는 헬륨 샘플이 필요했습니다. element substance chemistry AI와 채팅어휘 게임독해 연습