Even now he is dead, but he was also a useful knowledge of our world and its descendants forever.ผลลัพธ์ (ภาษาอังกฤษ) 2:Even now he is dead, but he was also the knowledge that is useful to the world and our descendants forever.ผลลัพธ์ (ภาษาอังกฤษ) 3:Even now he is dead, but he is still useful knowledge to our world and descendants forever.