The enzyme may exist in two interconvertible , active forms which possess different activation energies .

酶可以以两种相互可变的、具有不同活化能的活性形式存在。

" According to albert einstein 's special theory of relativity , matter and energy are equivalent and interconvertible "

根据爱因斯坦的狭义相对论，物质与能量是等效的，而且可以相互转换。