Import process is intended for uploading content (pages, products, etc.) to your store. You can do it with "Import Manager".
It is a very flexible feature. You can import data from CSV files, that was downloaded from any programs ( or applications ), and adapt them for uploading to your store. Of course with the ability to select translations in files. :)
Follow the next steps:
Go to "Imports" in the "Import / Export" section.
Select CSV file to import.
Select the prepared fields scheme in the right sidebar or create your own.
Press the "Start" button at the top right corner of the page.
Depending on the content size, import time can take hours. All this time program is running in the background, so it doesn’t interfere with other processes. It also doesn’t require constant monitoring. At the end of the process you will receive a notification to email about import completion.