no file什么意思

例句：

Close the application to make sure that no file remains open.

关闭程序以确保没有文件再被打开了。

No file format information can be found in the registry.

注册表中找不到文件格式信息。

If no file is specified, the last file specified is used.

如果未指定文件，将使用上次指定的文件。

It is made of the finest steel, no file could get through.

你得锉上几个小时才能使这金属变得光滑。

No file is currently selected in the Solution Explorer.

当前未在解决方案资源管理器中选定任何文件。