It is possible and there are various ways to do so! 
For example, ...
- Do charades so they can understand 
 - use G.oo.gle Translate and type what you'd like to say! 
 - find another language you all might have in common 
 - Find someone who speaks both of the languages so they can translate/interpret 
 - Learn a few keywords/phrases in the other language 
 
If one gets lost and you don't know Indonesian, for example, then try the things listed above!