When the ratfish swam over the hidden electrodes, I switched on the electric field and simultaneously gently tapped the fish with a glass rod, coaxing it to swim with the water current.

• 当鼠鱼游到隐藏电极的上方时，我便打开电场，同时用玻璃棒轻敲鼠鱼，诱使牠顺水而游。