Like in this case, the culprit could have been a redox reaction, in which electrons get transferred between two or more compounds.

像这种情况一样，罪魁祸首可能是氧化还原反应，在这种反应中，电子在两种或多种化合物之间转移。

Bacteria release energy in the form of electrons when they metabolize glucose, and at least one species of bacteria can transfer those electrons outside its cells, completing a circuit.

细菌在代谢葡萄糖时以电子的形式释放能量，至少有一种细菌可以将这些电子转移到细胞外，从而完成一个电路。