In Magento 1.x you could import different content for each store view by having each store data in new line and empty sku field. Unfortunately this seems not to work in Magento 2 and I could not find any information about it. The official docs are not very helpful on this matter.
I tried with following CSV:
sku,store_view_code,name 1111,,"Default name" ,et,"Translated name"
This results in error:
Please make sure attribute "sku" is not empty
I also tried to import translations separately, adding
store_view_code with appropriate value:
sku,store_view_code,name 1111,et,"Translated name"
This actually did import content to correct store view, but it also deleted default name from database.
I do understand that I could just insert translations to
catalog_product_entity_varchar and similar, with some custom script, but isn't there really no official/non-coding way of doing this in Magento 2?