中文同义词查询
用Mathematica/Wolfram从汉典抓取同义词
在Emacs中调用：
(defun thesaurus-cn (&optional b e)
"look up Thesaurus in current region, need Mathematica"
(interactive "r")
(shell-command
(concat "~/.emacs.d/elisp/thesaurus-cn.m " (buffer-substring b e))))
(global-set-key (kbd "C-T") 'thesaurus-cn)
