The user-mode application requests to read/write from some device, i. e. makes I/O operation.

的用户模式应用程序请求读取某些设备/写，即让I /O操作。

youdao

E. g. I have to leave at 6 o 'clock this afternoon.

今天下午六点钟我必须走了。

youdao

E. g. I have to leave at 6 o 'clock this afternoon.

今天下午六点钟我必须走了。

youdao