英语语法分析

For many firms, they are a stimulus to revenue.

对许多公司来说，它们是刺激收入的因素。

Regard each failure as a stimulus to further efforts.

把每次失利看成对进一步努力的激励。

《新英汉大辞典》

Each of these methods compares an infant's state prior to the introduction of a stimulus with its state during or immediately following the stimulus.

所有这些方法都把引入刺激前婴儿的状态与引入刺激时或之后婴儿的状态进行比较。