Another one is Cambridge Learners' Corpus of Several million words. Its product is the "Cambridge Learner's Dictionary" (剑桥英语学习词典) with the domestic price of 35.9 Yuan. It's very helpful in language teaching.
But when it comes to "Who can use the CLC?", it reads:
Currently, it can only be used by authors and writers working for Cambridge University Press and by members of staff at Cambridge ESOL.
What a pity!
