与上述“成功路上垫脚石”一招相似，但这招适合于所有情况，不仅是适用于失败振作上。
Similar to the "stepping stone to success" trick above, but it can be used for anything, not just failure.
一个单薄的中产阶级阶层在本质上意味着那些出身低收入家庭的人可依靠的垫脚石太少了。
A thinner middle class, in itself, means fewer stepping stones available to people born into low-income families.
当下料或废料从模具上掉下时要求使用垫脚。
Parallels are required when blanks or scrap are discharged through the die shoe.
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