YOU SAID:
You'll never keep me contained.
INTO JAPANESE
あなたは私を封じ込め続けることは決してないでしょう。
BACK INTO ENGLISH
You will never keep me contained.
INTO JAPANESE
あなたは私を封じ込め続けることは決してありません。
BACK INTO ENGLISH
You will never keep me contained.
That didn't even make that much sense in English.