It seems that Lingoes Converter utility allows users to export some texts from .ld2 files (Lingoes dictionaries) and save them in a simple .txt files, perhaps for future work or to use them in another document. This looks like the most convenient way for this ld to txt conversion.
Convert Lingoes compiled dictionary file to Simple text file.
We found one software available in the database for this conversion.
Microsoft Windows software - convert ld2 to txt on Windows
A converter script for Ligoes files
Convert from ld2 file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.