完全失败

• fall flat
• lay an egg
• come to nothing
• checkmate

例句

1. 最后，他们不得不承认完全失败了。
   At last they had to acknowledge their defeat as complete.
2. 我以一分之差没有通过法语考试——但这比完全失败好不了多少。
   I failed to achieve the pass mark by only one per cent in my French exam-but still, a miss is as good as a mile.
3. 他的企图完全失败了。
   His attempt proved an abortion.