You must turn off the switch when anything goes wrong with the motor.
如果电动机有什么毛病时，你必须关掉开关。
We use that switch to control this motor.
我们用那个开关管制马达。
You must turn off the switch when things goes wrong with the motor.
假若电念头有什么毛病时，你必需关掉开关。
You must turn off the switch when by any means goes wrong with the motor.
要是电念头有什么毛病时，你必须关掉开关。
The electric motor is controlled by a pedal switch to rotate or stop.
所述的电动机由脚踏开关控制转动或停止。
The battery is connected with the motor by an electric rope through a switch.
电瓶和电机由电绳通过开关连接。
The battery is connected with the motor by an electric rope through a switch.
电瓶和电机由电绳通过开关连接。
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