Current behavior: 
There is no direct integration with IATE EU terminology.

Available workaround:
If possible, obtain the terminology in XLSX format and import it to the term base. However, it is not live.

Requested behavior:
Add integration between Phrase and IATE (https://iate.europa.eu/).

Use case:
The Linguist would have direct access to the official source of this EU terminology. Useful help to maintain the consistency and improve the quality of the translation.