Fears that the world was about to run out of fuel proved groundless.事实证明, 对全球燃料即将耗尽的担忧是毫无根据的。

The allegations were completely groundless.这些指控完全是无稽之谈。

The judge dismissed the case, claiming the charges against him were groundless.法官驳回了案件, 称对他的控告没有根据。