electric bell

例句：

1. 1.The electric bell rang at 7 o'clock.
   七点钟，电铃响了。
2. 2. She answered the door with the electric bell.
   她用电话铃回答了门。
3. 3.The old man used to ring his electric bell every morning.
   那个老人以前每天早上都会按他的电铃。