Just as the cause of the fire that destroys a house can be both the spilled kerosene on the floor and the discarded cigarette stub, child labor can have many triggering factors.

• 正如烧毁房舍的火灾，可能是倾倒在地的煤油和丢弃的菸头一起引发，童工也可能是多种因素共同促成。