There is no general agreement on a standard definition of intelligence.

对“智力”一词目前还没有一个普遍认同的标准定义。

The first speakers at the conference criticized Professor Johnson's new programme for lack of definition.

会上的首批发言者批评约翰逊教授的新项目不够清晰。

Human perception is highly imperfect and by definition subjective.

人的感知是极不完美的，而且其本质就是主观的。