Is the plug in properly? Has the power supply been cut off? Has the fuse broken?

插头是否正确？电源切断了吗？保险丝是否完好？

youdao

Implementation of this interface requires a zero-argument constructor for use by ActionServlet, to ensure the plug-in is created properly.

这个接口的实现需要一个零参数的构造函数，供actionservlet使用，从而确保插件可以正确创建。

youdao

The db2auth plug-in must be installed and running properly.

必须正确安装和运行db2auth插件。

youdao

Then in 2007 UEC was investigated and sued for failing to properly plug exploration wells, allegedly leading to groundwater pollution.

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