How is MTool able to translate this then?
By proper translation I mean without using Mtool to hook into the game and replace the strings. Actually more recently translator++ supports
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but you do need a copy of the engine (a pirated version probably works). It apparently has a localization tool that you can use to patch the translated text directly into the game. I include the parser as an attachment since it is patreon only.
Alternatively if anyone wants to fix the Mtool bing translation they could always do something like on this video:
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.