设计文档建议工具条具有关联性，比如说：剪切或复制选项只有在能被剪切和复制的元素被选中后才能出现。

The design documents suggest that toolbar be contextual.So, for example, 'cut' or 'Copy' items only appear when something that can be 'cut' or 'copied' is selected.

youdao

设计文档建议工具条具有关联性，比如说：剪切或复制选项只有在能被剪切和复制的元素被选中后才能出现。

The design documents suggest that toolbar be contextual. So, for example, 'cut' or 'Copy' items only appear when something that can be 'cut' or 'copied' is selected.

youdao

有文件管理器，你可以将一个文件从一个目录拖到另外一个目录下，剪切和复制文件，删除文件等- - - - -那么，为什么还用用这些古老的命令行程序呢？

With a file manager, you can drag and drop a file from one directory to another, cut and paste files, delete files, etc. So why use these old command line programs?

youdao