Answer:
Ribosome
Step-by-step explanation:
Ribosome is a cell structure composed of RNA and proteins. They are the site of protein synthesis in the cells of living organisms, found either freely in the cytoplasm or attached to surfaces of endoplasmic reticulum organelle (RER).
According to this question, Ribosomes are the cell structures said to "speak two languages" because they are found in both prokaryotic and eukaryotic cells performing the function of protein synthesis (translation). Hence, ribosomes speak the prokaryotic language as well as the eukaryotic language.