我已经使用 nodejs 和 npm 安装（全新安装），然后按照 sequelize http://docs.sequelizejs.com/manual/tutorial/migrations.html#installing-cli教程的说明安装 sequelize-cli 和模块
但是当不想对 sequelize 做任何事情时，它会返回如下错误：
me@u64:~/project/manztihagi$ sequelize
internal/modules/cjs/loader.js:583
throw err;
^
Error: Cannot find module 'sequelize'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:581:15)
at Function.Module._load (internal/modules/cjs/loader.js:507:25)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (internal/modules/cjs/helpers.js:20:18)
at Object.<anonymous> (/usr/lib/node_modules/sequelize-cli/lib/helpers/model-helper.js:7:18)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)
at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
at Function.Module._load (internal/modules/cjs/loader.js:530:3)
at Module.require (internal/modules/cjs/loader.js:637:17)
at require (internal/modules/cjs/helpers.js:20:18)
at /usr/lib/node_modules/sequelize-cli/lib/helpers/index.js:18:52
at Array.forEach (<anonymous>)
at Object.<anonymous> (/usr/lib/node_modules/sequelize-cli/lib/helpers/index.js:17:4)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)
at tryModuleLoad (internal/modules/cjs/loader.js:538:12) …