I wanted to prepare the (long) page https://www.wikidata.org/wiki/Wikidata_talk:SPARQL_query_service/queries/examples page for translation. It inserted quite a big numbers of "translate" tags as I did only wanted to translate some parts of the queries exemplified (the comments mainly) and not the rest to help people understant how to use sparql for queries.
One amongst other problem appeared, which does not ease the work, is that the loading of the page takes then almost half a minute to load ... and to find mistakes in the translate tags - see revision https://www.wikidata.org/w/index.php?title=Wikidata:SPARQL_query_service/queries/examples&oldid=390053650
also see the discussion in https://www.wikidata.org/wiki/Wikidata_talk:SPARQL_query_service/queries/examples#Translation
(on a side note, one of the other problems is that the translate tags and metadatas are viewed as a burden by people who prefers cancelling translation than to deal with the tags - I'll fill another bugreport)