As a translator, you may save yourself some work by starting from a reasonably good translation produced by a machine, and modify that translation, to make it perfect.
Thus, before you start working on a translation, you might have the PO file pretranslated.
This process, also called machine translation, is nowadays best performed through a Large Language Model (LLM). (See https://en.wikipedia.org/wiki/Machine_translation#Neural_MT, https://en.wikipedia.org/wiki/Neural_machine_translation#Generative_LLMs.)