- Keep it short and simple (K.I.S.S) - be specific, no idioms, no abbreviations, no jargons
- always clarify
- use pictures or maps - when I went to Kyoto and needed to ask for directions, I just showed them the picture of where I want to go and answered me by pointing the direction.
If worst comes to worst,
- Ask for a translator.
- Be patient! Everybody has different level of understanding and comprehension!
there are language apps and dictionaries available but haven’t tried them.