There are good grounds for concern about the future .

我们有充足的理由对未来感到担忧。

That ought to be grounds for concern .

而这应该是关注的原因。

The anti-frackers have reasonable grounds for worry .

反对水力压裂者的担忧是有合理根据的。

Demonstrators also broke into the grounds of the american embassy in yemen .

也门示威者也闯入美国驻也门大使馆的庭院内。

He has owned the property for 25 years and has an expansive studio on the grounds .

他25年前买下了这幢房子，地面一层有个面积很大的工作室。