Apply the opposite charge and the electrode flips back, breaking the circuit.
利用相反的电荷，电极就会复位，进而断开电路。
2
One major area is that of trafficked Labour with people used for domestic work or, more commonly, for back-breaking Labour in agricultural industries.
一个主要领域是劳动力的非法交易，人们被迫从事家务劳动，更普遍的是从事艰苦繁重的农业劳动。
3
Mr Schoose, meanwhile, is out prospecting at his own mines each weekend. It's back-breaking work, he says, but it is the hope of hitting the gold that motivates.