YOU SAID:
Phrases are unfortunately unknown
INTO JAPANESE
残念ながらフレーズは不明です
BACK INTO ENGLISH
Unfortunately the phrase is unknown
INTO JAPANESE
残念ながら、フレーズは不明です
BACK INTO ENGLISH
Unfortunately, the phrase is unknown
INTO JAPANESE
残念ながら、フレーズは不明です
BACK INTO ENGLISH
Unfortunately, the phrase is unknown
That didn't even make that much sense in English.