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Such assistance was essential in identifying potential dangers—poisonous species, unpredictable rivers, uncharted territories—which could mean the difference between life and death.

这种援助对于查明潜在危险——有毒物种、不可预测的河流、未知领域——至关重要，那些危险可能意味着生死之差。

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What people did is they said let's define a unit of energy that represents a unit charge accelerated across a unit potential difference, and let's call that the electron volt.

前人们所做的就是他们说让我们确定,一个能量单位用来代表一单位电荷,加速穿过形成的一单位电势差，我们叫它电子伏特。

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That potential difference is generated by the movement of ions, principally sodium and potassium across the membrane.

电势差是由离子运动造成的,特别是钠和钾的跨膜运动

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I feel that I've fallen short of my potential " to really make a difference."

我觉得我能改变世界的能力,越来越弱了“

哈佛公开课 - 幸福课课程节选

It's our difference potential and it creates social energy.

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And that, I think, illustrates the potential difference in terms of how we could run our campaigns.

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In the case of lead and lead dioxide, this potential difference is just over two volts per cell.

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