やり直(なお)すto do over again, to redo, to start over, to remake, to resume, to recommence

一度(いちど)死(し)んで、人生(じんせい)をやり直(なお)すことにした。

I decided to start over in life after dying once. {to do over again, to redo, to start over, to remake, to resume, to recommence}

答(こた)えが違(ちが)ったので計算(けいさん)をやり直(なお)すことにしました。

I decided to redo the calculation because the answer was incorrect. {to do over again, to redo, to start over, to remake, to resume, to recommence}

上司(じょうし)：「仕事(しごと)が雑(ざつ)なので、もう一度(いちど)やり直(なお)してください。」

Boss: "Your work is sloppy, so please do it over again." {to do over again, to redo, to start over, to remake, to resume, to recommence}

英語(えいご)の勉強(べんきょう)をやり直(なお)してみたら、意外(いがい)と楽(たの)しいことが分(わ)かりました。

When I decided to redo my English studies, I found out it was surprisingly enjoyable. {to do over again, to redo, to start over, to remake, to resume, to recommence}

何(なん)度(ど)も真剣(しんけん)にやり直(なお)しているのに、それでも一(いち)度(ど)も実験(じっけん)が成功(せいこう)しません。

Despite repeatedly starting over with serious effort, the experiment has never been successful even once. {to do over again, to redo, to start over, to remake, to resume, to recommence}