Method: Convert all footnotes into endnotes (menu: Insert-Reference-Footnotes and Endnotes), so that all footnotes can be translated together and copied.

If you need to return, you can directly press ctrl+z to restore or switch back in the menu above.

In addition, if there are footnotes and endnotes in the original text, then use the third option, the footnotes and endnotes are exchanged, and then they are copied and exchanged back.