1. 冬青属   coconut   holly   cinchona   palm   Hint Half-n-half Clue   2. 红木   willow   cinchona   rosewood   teak   Half-n-half Clue   3. 椰子   walnut   holly   palm   coconut   Half-n-half Clue   4. 棕榈   cinchona   willow   palm   teak   Half-n-half Clue   5. 核桃   cinchona   willow   teak   walnut   Half-n-half Clue   6. 杨柳   spruce   sandalwood   coconut   willow   Half-n-half Clue   7. 檀香木   spruce   cinchona   sandalwood   holly   Half-n-half Clue