this, by the way, is a hard requirement for any sort of machine translation.
Without a mechanism to provide additional context it is fundamentally impossible to create a reliably accurately translation because just a text by itself does not contain the author's intent.
Mind that human translation has the exact same shortcoming. If you make a game and give the translator only a list of all the words and sentences in the game without ever showing them the actual game contents the translation will be awful.
It's like trying to get a calculator to come up with the correct result with half of the values being ambiguous or unknown.