这种香水配方中加入卡斯卡里拉树皮，以增添独特的辛香调。

The perfume recipe includes ___cascarilla bark to add a distinctive spicy note.

这种香水的独特气味来自卡斯卡里拉树的树皮。

The distinctive scent of this perfume comes from the bark of the ___cascarilla tree.