从看视频到做电路板，再到给它写程序，林海花了整整一个月的时间，最终发明出“酷乐宅”。他的努力没有白费。
From watching the video to building an electronic board and writing a program for it, Lin spent an entire month bringing Crazyer to life. His hard work paid off.
他为自己的项目募集资金的努力白费了，因为没有人表现出要从口袋掏钱的意思。
His efforts to raise money for his program were in vain because no one showed any intention to take a cent out of their pockets.
他在最后一刻的让步使大家的努力没有白费。
Then I went to see him to thank him; his last-minute concession had saved the day.
他的努力和付出没有白费。
但是很快人们又看到卡内基在河边练习演讲了，他的努力最终没有白费。
But soon Carnegie was seen practicing public speaking on the riverside. His hard work paid off at last.
但是很快人们又看到卡内基在河边练习演讲了，他的努力最终没有白费。
But soon Carnegie was seen practicing public speaking on the riverside. His hard work paid off at last.
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