Naylor acknowledged, in a letter to the judge, that he was a drug addict.

在一封写给法官的信中，内勒承认他是一个吸毒者。

It is widely acknowledged that transferring knowledge in a classroom environment is very inefficient.

课堂环境内知识的传递效率很低，这是人们普遍承认的。

Belatedly, the government has acknowledged the problem.

政府过晚地承认了这个问题。

There is an acknowledged risk of lung cancer from radon.

氡被认为有诱发肺癌的危险。