YOU SAID:
hello i am fourteen years old
INTO JAPANESE
こんにちは私は14歳です
BACK INTO ENGLISH
Hi I am 14 years old
INTO JAPANESE
こんにちは、私は14歳です
BACK INTO ENGLISH
Hi, I am 14 years old
INTO JAPANESE
こんにちは、私は14歳です
BACK INTO ENGLISH
Hi, I am 14 years old
That didn't even make that much sense in English.