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adj.无理由的
1、soundless───adj.无声的；寂静的
2、groundlessly───adv.毫无根据地
3、groundmass───n.基质，石基
4、frondless───不向前的
5、boundless───adj.无限的；无边无际的
6、groundsels───n.千里光；千里光属植物（等于groundsil）
7、roundlets───n.小圆
8、woundless───无情的
9、grounders───n.滚地球
1、For a moment it looked as though all the fears that had accompanied the build-up to the American-led invasion had been groundless.───一时间，所有在美国为首的联军攻打YiLaKe前夕萌生的担忧似乎都是毫无根据的。
2、Our fears proved groundless.───我们的担心证明是毫无道理的。
3、Thus the idiom "Like the man from Qi who feared that the sky might fall" means to hold a needless or groundless fear or worry.───后来人们根据这个故事引申出“杞人忧天”这句成语，现在用来比喻不必要或无根据的忧虑和担心。
4、I can say with confidence that such rumours were totally groundless.───我可以很有把握地说这些传言完全没有根据。
5、Fears that the world was about to run out of fuel proved groundless.───担心地球燃料即将用尽被证明是没有根据的。
6、It is no use worrying about those groundless things because everything is still up in the air.───你这么杞人忧天是没有意义的，事情还没定呢。
7、In a statement, Rosneft said the British court order was groundless and it was taking all necessary measures to protect its interests.───Rosneft在一份声明中表示，英国法庭的命令毫无根据，该公司将采取一切必要手段保护自身的利益。
8、On Tuesday, China's commerce ministry said the report's conclusions were groundless and could hurt relations between China and the U. S.───中国ShangWuBu周二说，报告结论没有根据，可能损害中美关系。
9、'The only objective of these farcical and groundless trials is to defame me in the media, ' Mr. Berlusconi told reporters.───贝卢斯科尼对记者们说，检方提出的这一系列看似闹剧且毫无根据的指控就是为了在媒体上诋毁他。