The third, and most potent limitation is that it is not possible to be certain that the infant's response was due to the stimulus presented or to a change from no stimulus to a stimulus.

第三也是最有力的限制在于婴儿做出的是面对刺激的反应，还是从受到刺激到没受到刺激的变化，这是无法确认的。

youdao

The change in volume rapidly-it's called 'rough' in acoustics-most people's ears don't like that stimulus.

音量迅速改变——声学中称为‘粗’——大部分人不喜欢那种刺激。

youdao

Economic stimulus policies demands change as well.

经济刺激政策也应调整。

youdao

Although the stimulus measures will not change that, the government does hope to alleviate some of the immediate scarcity: of the 5.9 billion baht allocated to the agriculture ministry, three-quarters will be spent on efforts to improve irrigation.

ECONOMIST: Winds of fortune on South-East Asia’s farms | The

In addition, Federal Reserve policymakers start a two-day meeting that is expected to end without any change to its economic stimulus policies.

NPR: Oil Down As Traders Await US Data, Cyprus Vote

The credit scored high because it did two things that TPC analysts felt were essential to economic stimulus: it raised take-home pay quickly via a change in the withholding tables (subject to some controversy) and it did so for people who would spend it.

FORBES: Big Tax Cut For Workers Set To Expire