不起作用

What I said made practically no impression on him.

我的简直不起作用。

The dye doesn't take in cold water.

那种染料在冷水中不起作用。

The moribund Post Office Advisory Board was replaced.

这个不起作用的邮局顾问委员会已被换。

Unfortunately their plan misfired badly.

可惜们的计划完全不起作用。