1.  all one's efforts wasted
2.  all things lost

• 1. 付诸东流: Down the drain | all one's efforts wasted | wasted effort

• 1.我们的所有努力都付诸东流了。
  All our efforts were in vain.
  dict.yoduao.com
• 2.他们的努力都付诸东流。
  Their efforts were unavailing.
  dict.yoduao.com
• 3.当时情况就是那样，他的计划只好付诸东流。
  As things stood then, his whole plan had to be cast to the winds.
  dict.yoduao.com

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