YOU SAID:
Ironic. He could prevent others from death, but not himself.
INTO JAPANESE
皮肉です。彼は他人の死を防ぐことができたが、彼自身はできなかった。
BACK INTO ENGLISH
It is ironic. He could prevent the death of others, but he could not.
INTO JAPANESE
皮肉です。彼は他人の死を防ぐことはできたが、できなかった。
BACK INTO ENGLISH
It is ironic. He could but did not prevent the death of others.
INTO JAPANESE
皮肉です。彼は他人の死を防ぐことはできたができなかった。
BACK INTO ENGLISH
It is ironic. He could not prevent the death of others but could not.
INTO JAPANESE
皮肉です。彼は他人の死を防ぐことはできませんでしたができませんでした。
BACK INTO ENGLISH
It is ironic. He could not prevent the death of others but could not.
That didn't even make that much sense in English.