Emergency mode can prevent movement of data sets under the migration, recall, backup, and recovery functions.
应急运行方式可以防比在迁移、调用、备份和恢复操作下数据集的移动。
To help simplify the command-mode cursor movement, when you click Esc at a command prompt, think of your $HISTFILE being loaded as a normal file in vi.
若要帮助简化命令模式下的光标移动，当您在命令提示符处按 Esc 键时，请想象您加载的 $HISTFILE 为 vi 中的普通文件。
Optic flow is the speed of mode movement in images.
光流是指图像中模式运动的速度。
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