a workhorse埋头苦干的人;老黄牛
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Workhorse Programmer骨干程序员
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N-COUNT（可数名词） A workhorse is a horse which is used to do a job, for example, to pull a plow. 役马; 耕马
N-COUNT（可数名词） If you describe a person or a machine as a workhorse, you mean that they can be relied upon to do a large amount of work, especially work that is dull or routine. 吃苦耐劳的人 [usu with supp]
For years the Apple II had been the workhorse in schools across America.
过去很多年里苹果II一直是全美学校的主要电脑。