As an alchemist, Drebbel suspected that the transmutation of lead into gold in a laboratory was inhibited by great temperature fluctuations of the heat sources cooking the elements.

• 作为一个炼金术士，德雷贝尔当时怀疑实验室里的铅变不成金子，可能是因为加热元素的热源有巨大的温度波动。