发言人目前不被允许透露细节。

The spokesperson ___is not ___at ___liberty ___to reveal the details yet.

儿童应该被允许探索他们的兴趣。

Children should ___be ___at ___liberty ___to explore their interests.

研究人员被允许无限制地发表他们的发现。

Researchers ___are ___at ___liberty ___to publish their findings without restriction.