Those lasers produce one wavelength of light that doesn't stop unless the power is cut.

这些激光器产生一个具有波长的光，它不会停止，除非电源被切断。

youdao

Rick: Unless you do so by next week, I'm afraid we're going to cut off your power supply.

瑞克：除非你在下星期前缴费，否则贵府恐怕就会被断电。

youdao

Afghanistan's national power company says it will cut the electricity supply to the main prison unless it pays its overdue bills in the next few weeks.

BBC: Threat to cut electricity to Afghanistan's central jail