noun 다운로드 🔗공유 변재 Sapwood; the soft, newer wood in the trunk of a tree found between the bark and the hardened heartwood. Examples : "The tree's alburnum was a pale yellow color, easily distinguished from the darker heartwood. " 나무의 변재는 옅은 노란색이었고, 더 어두운 심재와 쉽게 구별되었다. plant material nature biology structure AI와 채팅어휘 게임독해 연습