The device they designed strips electrons from lactate, which creates a small electric current.

该设备能使乳酸中的电子脱离，从而产生一小段电流。

SWOT is designed to measure small differences in surface heights around smaller currents, where much of the oceans' reduction of heat and carbon is believed to happen.

SWOT旨在测量较小洋流周围表面高度的微小差异，据信海洋的大部分热量和碳减少都发生在较小洋流周围。

And if you hold hands with another person, a small electrical current can pass through your held hands and become like a switch that can trigger something else to happen.

当你和另一个人手牵手时，会有微量电流通过你们握着的手，变成像是一个触发其他事的开关。

What triggers the heart to squeeze are these signals, these small electrical currents which travel from the outside to the inside of the cell when, every time your heart beats.

触发心脏挤压的是这些信号，这些小电流在每次心脏跳动时从细胞外传到细胞内部。