Update command-line-usage.md
Update command-line-usage.md
翻译 function/list-functions.md
Update list-functions.md
翻译 function /string-functions.md
Update command-line-usage.md
Update command-line-usage.md
翻译 command-line-usage.md
Update command-line-usage.md
Update command-line-usage.md
Merge pull request #88 from motopia/master

翻译 function/string、function/list 、usage/command-line-usage