1. turn on
   v.开启,变得兴奋,突然装出,开始
   

1. The car can turn on a dime.
   这部车能在极小的地方转弯。
2. Please turn on the television.
   请打开电视。
3. I turn on the light so that I can see clearly.
   我把灯打开以便看得清楚些
4. Turn on the radio.
   打开收音机
5. The turns on the racetrack were steeply banked.
   赛车道的拐弯处都筑成了倾斜的路面

　1个名词解释