空替代出现在标准化策略中用来连接其它非空策略，它只是说明不采用任何行动是正确的。

The empty alternative can appear in a Normalized policy in conjunction with other non-empty alternatives. It simply states that taking no action is a valid choice.

youdao

使用该实例代码的最佳途径是获取一个名为read_and _ write的空脚本，复制实例脚本来替代它。

The best way to use the example code is to capture an empty script with the name read_and_write, then copy and replace it with the example script.

youdao

相反，它是用空指针替代。

Instead, it places a null pointer into the field.

youdao