Whereas synthetic chemists can whip up massoia lactone in the lab, no tree stripping necessary.
不过实验室合成的可以替代它，不用去剥树皮。
英语百科
Massoia lactone
Massoia lactone is an alkyl lactone derived from the bark of the Massoia tree (Cryptocaria massoia) which is found in Papua, Indonesia though the compound can also be found as a component of cane sugar molasses, cured tobacco and the essential oil of Sweet Osmanthus (Osmanthus fragrans).