whereof

/wair-uhv, -ov, hwair-/US // wɛərˈʌv, -ˈɒv, ʰwɛər- //UK // (wɛərˈɒv) archaic, or formal //

其中,其中包括,其中

Definitions

Then again, Hice does have something of a history of mixing politics and religion, so at least he knows whereof he speaks.
Moreover, as a former security chief he knows whereof he speaks.
In faith whereof, we, the respective Plenipotentiaries, have signed this treaty and have hereunto affixed our seals.
The very moment he arrived I found myself again, I recognized my own existence, whereof I had not been conscious these ten years.
In witness whereof I have hereunto set my hand the day and year above written.
In witness whereof, the said party of the first part has hereunto set his hand and seal the day and year first above written.
In witness whereof, the parties to these presents have hereunto set their hands and seals.