workhorses
n.
驮马,做粗工者,重负荷机器( workhorse的名词复数 );
例句:
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They led the workhorses to the watering trough.
他们把耕马带到饮水槽去饮水.
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Van de Graaff generators are the current workhorses of nuclear structure research.
范德格喇夫加速器是研究原子结构的通用工具.
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Transistors are the workhorses of electronics.
晶体管是电子技术的重要组成.