work fruitlessly

基本解释

• [語言學]勞而無功

英汉例句

權威例句

• Caves were thought to be essentially devoid of life until six years ago, when the renowned University of Colorado microbiologist Norman Pace, also an avid caver, discovered a way to identify extremophile microorganisms by cloning and sequencing unique sections of their DNA. Prior to Pace's work biologists had fruitlessly tried to cultivate these microorganisms with traditional lab techniques using nutrient-rich petri dishes.
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专业释义

語言學

• 勞而無功