Circuit-breakers are very large,but they work in exactly the same way as a small electric-light switch.
Circuit-breakers are very large,but they work in exactly the same way as a small electric-light switch.
断路器很大，但其工作方式却与小的电灯开关完全相同。
Circuit-breakers are very large,but they work in exactly the same way as a small electric-light switch.
断路器很大，但其工作方式却与小的电灯开关完全相同。