fourfold
英 ['fɔːfəʊld]
美['fɔrfold]
- adj. 四倍的；四重的；四垒的
- adv. 四倍；四重
考试真题
- The growth in public money for academic research has speeded the process: federal research grants rose fourfold between 1960 and 1990, but faculty teaching hours fell by half as research took its toll.
出自-2011年考研阅读原文