然而，用与吸烟母亲血液内相似量的一氧化碳处理这些组织后，细胞死亡就会明显减少。

However, when tissues were treated with carbon monoxide, at levels similar to those found in blood of smoking mothers, cell death was significantly reduced.

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为了控制参与者的咖啡因吸收量，研究组给他们含有大约相当于一天四杯咖啡的咖啡因药片，或者外表相似的安慰剂药片。

To control the amount of caffeine the participants received, the team gave them pills containing caffeine equivalent to around four cups of coffee in one day or similar looking placebos.

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司机要根据他们开车量来购买电池使用，和手机的充电电池相似。

Drivers would buy battery usage plans based on their driving amounts, similar to how cell phone plans work.

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