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Q : but growth is also undergirded by significant demand .

问题：但是增长也同样受到强烈的需求支持。

Northerners who depended upon cotton and other staples and who served the southern market strenuously opposed those who would destroy the system that undergirded their livelihood .

依赖棉花和其它农产品的北方人和尽力服务于南方市场的北方人，都反对那些破坏给他们生计以支持的奴隶系统。

To be sure , the bush administration has left the nation ravaged by its excess spending and monetary expansion that undergirded the housing bubble .

诚然，过度的开支和金融扩张在是布什任期内，同时这些过度行为又加速了房地产泡沫，因此留下了这个经济饱受侵蚀的国家。

Only the greatest courage , undergirded by even greater love , could have borne that mother up and lifted her above the chaos around her .

只有最伟大的勇气，再加上更博大的爱心的支撑，才使这位母亲挺住了，超然于周围的混乱之上。

The colonial policies of the 19th century , undergirded by a racist and eugenicist zeitgeist , have little to do with the reality of today .

19世纪的殖民政策受到了当时的种族主义及优生主义的时代思潮的影响，因而与今天的现实少有关系。