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vt.加强；从底层加固
1、underground parking───地下停车场
2、thunder tickets───雷霆门票
3、soreness underarm───腋下酸痛
4、bear up under───承受
5、thundering waters───雷鸣般的海水
6、under watch───监视之下
7、blunders on the danube───多瑙河上的失误
8、under separate cover───adv.在另函中
9、agencies under executive branch───行政分支机构
10、clearly understand───清楚地了解；清楚地明白；明了
1、As an open-source project, the computer code which undergirds BitCoin can be viewed, and modified, by anyone.───作为一个公开来源的项目，支撑比特币的电脑代码可被任何人检测修改。
2、An example of Japan's shift to software is Ruby, a programming language that undergirds big websites such as those of Twitter and Groupon.───日本向软件转变的一个例子是Ruby，它是一种加强像Twitter和Groupon这类大网站的程序编制语言。
3、Indeed, her most potent weapon might, paradoxically, be the fundamental honesty that undergirds her positions.───事实上，帮助她稳固政治位置的最有效的武器，恰好是她本性的耿直。
4、The dire economic situation undergirds this point: Washington should delay immediate fiscal cuts.───目前极度严峻的经济形势也证明了这一点：华盛顿方面应延期进行财政削减计划。
5、And thus they joined the vast undocumented workforce that undergirds America's food supply.───他们也因此而加入了美国的无证劳动力大军，正是这些人支撑着美国的食物供应。
6、But something deeper undergirds these impulses: A compulsive need to murder one's way to glory.───但是，支撑这种的冲动的还有更深层的东西：通过谋害实现光荣的强迫性需要。
1、Faith undergirds moral principles.
2、In short, the theory of heat undergirds all of modern physical science.