Check all your wiring before switching on the current.

启电流前检查所有电线路。

She switched on the light, wincing at the sudden brightness.

她打了，突如其来强烈光线刺得她不敢睜眼。

She got into the car and switched on the ignition.

她上车后点火车。

There is a switch on the wall for turning on the lights.

墙上有一电关。

Autoxidation of lipids is a chain raction of free radical.In the inducing stage,the inducers switching on free radical may be lipoxygenase or photoxidation,but the most is transitional metals.

脂类自氧化是一个自由基连锁反应，诱导期中启自由基诱剂可能是脂氧酶、光氧化，但多数为过渡金属离子。

The excrescent indicator is bright, output 1.May be lead to flow a protection, please turn off machine, needing an excrescent indicator to destroy to re- switch on again can recover normally.

异常指示亮，无输出 1． 可能是过流保护，请关掉机器，待异常指示灭掉再重新机可恢复正常。