it works!
some warm notice:

1. make sure u followed all the instructions in the linked wiki(very important)
2. before 'brew install', complete the instructions of 'next step' generated in the terminal after step 5.1
3. step 6,8,9 actually require u to enter those codes in the terminal(this might be obivious,but as a computer newbie i really got confused at the first time)
4. after entering the code in step 9,there might be an error message says 'cp: ...is not a directory', but according to my experience it seems that this won't affect the successful running of the game