The steam engine was the workhorse of the Industrial Revolution.蒸汽机是工业革命中经久耐用的重负荷机器。The Industrial Revolution originated in/from the invention of the steam engine.工业革命始于蒸汽机的发明。Who invented the steam engine?谁发明了蒸汽机？ A steam-engine transforms heat into energy.蒸汽机使热变为能。