The translation of the product page does not require the creation of a new item. In order to translate a product:
1. Go to Catalog > Products and choose the product you want to make the translation for from the Magento product grid.
2. Choose the Store View you want to translate product info for and start making translations.
3. Change the Name of the Product and other Magento product attributes if you like or just leave the default values of the default locale.
4. Change the Description of the Magento product.
Once you've finished press the Save button and go to the storefront to check out the changes. After you switch to the corresponding store view you will see that all the translations you've made have been successfully added.
Product Translation is just one of the series of articles about How to Configure Multi-Language Magento Website? which include information about the creation of a new store view, language packs installation, useful multi-language store extensions, CMS pages&blocks, email templates, and other translations in Magento 2 website. You should definitely get acquainted with them in order to know how to manage a multilanguage store.