single ignition

例句：

1. 1. The car's singleignition system is very reliable.
   这辆车的单点点火系统非常可靠。
2. 2. Theengine needs to be started with a singleignition switch.
   发动机需要用一个单点点火开关来启动。
3. 3. The pilotsuccessfully landed the plane using only oneignition key.
   飞行员成功地只用一个点火钥匙就降落了飞机。