来自《耶鲁大学开放课程：欧洲文明 第16集》

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  to make a ridiculous analogy--the outside linebacker.
  就像是足球比赛中的场外后卫
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  They end up at the sea.
  他们在海上结束了战争
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  Then shovels, and defensive weapons like
  到最后铲子 以及攻击性武器比如说
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  barbed wire and machine guns, become the weapons of the war.
  铁丝网和机关枪都成为了战争中的武器
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  That explains why there wasn't
  这就解释了为什么他们会输掉这场战争
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  and subsequently could never be a knockout punch,
  而且之后再无还手之力
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  and why millions of people died in and around those trenches.
  这也就是当时尸横遍野的原因了