We have inherent core design features that limit the effect of increases in reactivity.

固有的核心设计的特点是它限制了，反应力增加所带来的影响。

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There appeared to be some differences in reactivity to skin tests among these patients.

这些病人对皮肤试验的反应，看来有些差别。

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Reactivity is an increase in negative emotions or a decrease in positive emotions.

情绪反应是指消极情绪的增加或积极情绪的减少。

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AEA's engineers have exploited this reactivity (and also enhanced its effectiveness at exhaust-pipe temperatures, in ways they are reluctant to discuss) to burn up the undesirable particles and other carbon-rich pollutants.

ECONOMIST: Diesel engines