A fuse is a safety device in an electric plug or circuit. It contains a piece of wire which melts when there is a fault so that the flow of electricity stops. 保险丝
noun [专属名词]保险丝,熔丝;导火线,引信
The fuse blew as he pressed the button to start the motor. 保险丝在他按下按钮发动车子时烧断了。
When things fuse or are fused, they join together physically or chemically, usually to become one thing. You can also say that one thing fuses with another. 结合; 融合; 熔合