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chapter/Debugging-Syntax-Files.md

@@ -1,19 +1,15 @@
-## Debugging syntax files
+## 语法文件调试
 
-Syntax files are often the cause for slowdowns due to wrong and/or complex
-regular expressions. If the `+profile` [feature](#what-kind-of-vim-am-i-running)
-is compiled in, Vim provides the super useful `:syntime` command.
+语法文件由于包含错误的或者复制的正则表达式，常常会使得Vim的运行较慢。如果Vim在编译的时候包含了`+profile` [feature](#what-kind-of-vim-am-i-running)特性，就可以给用户提供一个超级好用的`:syntime`命令。
 
 ```vim
 :syntime on
-" hit <c-l> a few times to redraw the window which causes the syntax rules to get applied again
+" 多次敲击<c-l>来重绘窗口，这样的话就会使得相应的语法规则被重新应用一次
 :syntime off
 :syntime report
 ```
+输出结果包含了很多的度量维度。比如，你可以通过结果知道哪些正则表达式耗时太久需要被优化；哪些正则表达式一直在别使用但重来没有一次成功匹配。
 
-The output contains important metrics. E.g. you can see which regexp takes too
-long and should be optimized or which regexps are used all the time but never
-even match.
+请查阅`:h :syntime`。
 
-See `:h :syntime`.