终身不忘 meaning in English

kein memory throughout one's life span

He gave me all the assurances that the invention and faith of man could devise , that he would comply with these most reasonable demands , and besides would owe his life to me , and acknowledge it upon all occasions as long as he liv d
他向我提出了种种保证，凡是想得到和使人信得过的保证，通通提出来了。他还说，我的这些要求是完全合情合理的，他将会彻底履行同时，他还要感谢我的救命之恩，终身不忘。