nodejs npm安装不了 设置代理

C:\Users\heroyan>npm install lessnpm http GET https://registry.npmjs.org/less npm http GET https://registry.npmjs.org/less npm http GET https://registry.npmjs.org/less npm ERR! Error: connect ETIMEDOUTnpm ERR!     at errnoException (net.js:768:11)npm ERR!     at Object.afterConnect [as oncomplete] (net.js:759:19)npm ERR! If you need help, you may report this log at:npm ERR!     <http://github.com/isaacs/npm/issues>npm ERR! or email it to:npm ERR!     <npm-@googlegroups.com>npm ERR! System Windows_NT 6.1.7601npm ERR! command "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Fiejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "less"npm ERR! cwd C:\Users\heroyannpm ERR! node -v v0.8.8npm ERR! npm -v 1.1.59npm ERR! syscall connectnpm ERR! code ETIMEDOUTnpm ERR! errno ETIMEDOUTnpm ERR!npm ERR! Additional logging details can be found in:npm ERR!     C:\Users\heroyan\npm-debug.lognpm ERR! not ok code 0