有网络在上面用就是了，学习英语大概有一类五种可用，一类是绝对没有任何汉字，有汉字的叫做复习汉字，根本就不算学习英语。五种有：
Summers, D. (2003). Longman Dictionary of Contemporary English (New ed.). Harlow: Longman.
Hornby, A. S., Wehmeier, S., McIntosh, C., Turnbull, J., & Ashby, M. (2005). Oxford Advanced Learner's Dictionary of Current English (7th ed.). Oxford: Oxford University Press.
Collins COBUILD Advanced Learner's English Dictionary (5th ed.). (2006). Glasgow: HarperCollins.
Cambridge University Press. (2003). Cambridge Advanced Learner's Dictionary (1.0. ed.). Cambridge, England: Cambridge University Press.
Merriam-Webster Inc. (2008). Merriam-Webster's Advanced Learner's English Dictionary. Springfield, MA: Merriam-Webster.
排名不分先后，看哪种适合自己。