Failure is the mother of success.
失敗是成功之母

He has failed in his experiments many times,but he believes that failure is the mother of success.
他在實驗中多次失敗，但他仍然相信失敗是成功之母。
As an old saying goes,"Failure is the mother of success",you should find out why you have failed.
有句老話說，失敗是成功之母，你應該找出失敗的原因。

A:Steven,would you like to go dance with me?
史蒂芬，今晚和我們一起去跳舞怎么樣？
B:John,I am just not in the mood for this.
約翰，我現在沒那個心情。
A:You look so upset.What's going on?
你看起來很沮喪，怎么回事？
B:I lost the table tennis game yesterday.
昨天在乒乓球比賽中，我輸了。
A:What a pity.
真遺憾。
B:I just don't want to play table tennis any more.
我不想再打乒乓球了。
A:Is it that bad?It's nothing more than a game.
有那么糟糕嗎？不過是輸掉一場比賽而已。
B:My opponent bowled me with the very first ball.I was wondering If it's appropriate for me to play table tennis.
我的對手一球就把我淘汰了。我在想可能是我不太適合打乒乓球吧。
A:Come on!Failure is the mother of success.Don't lose heart.I'm sure you'll succeed.
別這樣，失敗是成功之母，不要灰心，我相信你一定會成功的。
B:perhaps you are right.But I still need some time to recover from the failure.
或許你說的對，但是我仍然需要一些時間從失敗中恢復過來。
A:I understand.
我能理解你。