- 重点词汇
- 电源
electricity/power supply; electric/power source; mains
- 错误
wrong; mistaken; erroneous; incorrect; false; mistake; error; blunder; fault
- 三角
trigonometry; thing in the shape of a triangle; triangular; involving three people or parties
- 交替
supersede; replace; alternate
- 闪烁
glimmer; glisten; twinkle; be evasive about; hesitate in speech; speak evasively