adj.五重的；五倍的
adv.五重地；五倍地
The advantage of the present scheme lies in a fivefold reduction in manpower. 这一方案的优点在于减少了4倍人力。
The stock market has now risen fivefold in slightly more than two years. 股票市场目前已经比之前的两年上涨了五倍。
