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