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