在5的4次方中,4是指数。
In 5 to the power of 4, the number 4 is the ___exponent.
他是自由市场经济理论的主要倡导者之一。
He is one of the leading ___exponents of free market economy theory.
在表达式5的4次方中,4是指数。
In the expression 5 to the 4th power, 4 is the ___exponent.