There are no controls except a master circuit breaker, which serves as an on-off switch.

除了有一个主断路器，它作为一项长期的开关并没有任何控制。

youdao

There are no controls except a master circuit breaker, which serves as an on-off switch.

除了有一个主断路器，它作为一项长期的开关并没有任何控制。

youdao