Extend (模组)->MULTILINGUAL(多种语言)，把四个模块全勾上。去官网下载翻译包到本地电脑 Drupal语言翻译下载Configuration ->User interface translation -> import(导入中文翻译包)Configuration ->Content language and translation ->Custom language settings(把里面所有的都勾上) Show language selector on create and edit pages（看情况需要就勾）Structure -> Block layout ->Disabled ->Place block ->Language switcher (然后自己把它放在你想放的位置)
