It is the "mirror" effect, or when one object is reflected across a plane to create another instance of itself.

反射对称就是一种镜子效映，一个物体在平面内反射后得到另一个自已。

youdao

To enable automatic decryption of the database master key of a mirror database, you must provide the password used to encrypt the master key to the mirror server instance.

若要启用镜像数据库的主密钥自动解密功能，必须向镜像服务器实例提供用于加密主密钥的密码。

youdao

You can then mirror their questions: for instance, if they ask whereabouts in China you come from, you can enquire as to which part of the UK they call home.

之后你就可以模仿他来问问题：比如，如果他们问你从中国哪里来，你也可以问他们的家乡在英国哪儿。

youdao

The systems basically work the same: a series of cameras, lasers or infrared sensors integrated into the car (on the back side of the rear-view mirror, in the bumper or behind the windshield, for instance) monitors lane markings in the road.

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For instance, Google will ban developers from distributing their client software outside of the Google Mirror API Client distribution channel for Glass.

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