临时设置一个环境变量。

Set an environment variable temporarily.

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rless别名临时地将LESSOPEN设置为|tac %s，这是特定于less的一个环境变量。

The rless alias temporarily sets LESSOPEN, an environment variable specific to less, to | tac % s.

youdao

临时地，通过在命令窗口或shell中设置 CLASSPATH环境变量来实现。

Temporarily by setting the CLASSPATH environment variable in a command window or shell.

youdao

临时地，通过在命令窗口或shell中设置 CLASSPATH环境变量来实现。

Temporarily by setting the CLASSPATH environment variable in a command window or shell.

youdao