呕心沥血
- na.make painstaking efforts
- 网络work one’s heart out; blood,sweat and tears; spare no efforts

呕心沥血
1.make painstaking efforts; make every effort to [do one's best to] achieve perfection; shed one's heart blood; spare no pains; strain one's heart and mind; take infinite pains; throw all one's energy into; through painstaking effort; work one's heart out; work indefatigably; work with might and main
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