Geithner argues that major exporting nations can no longer look to the United States as an engine that will pull their economies out of recession.

VOA: standard.2009.09.25

Look at the last two lines: "But that two-handed engine at the door stands ready to smite once, and smite no more."

看一下最后两行：,“然门边的双手引擎“,整装待发着发出毁灭性的打击“

耶鲁公开课 - 弥尔顿课程节选

Whatever the two-handed engine is, it will smite once and smite no more.

不论双手引擎是什么，它都会不断的进行攻击。

耶鲁公开课 - 弥尔顿课程节选

And Manifest Destiny was the engine of capitalism, make no mistake.

而且,命运天定思想,是资本主义的发动机,这点无容置疑

耶鲁公开课 - 美国内战与重建课程节选