按动开关后，能奏出一段音乐来代替铃声的门铃musical doorbell

• 欧美电器厂采用进口电脑、集成电路等研制成了高效“欧美”牌音乐门铃。

  The Oumei electrical device factory has used materials such as imported computers and integrated circuits to research and manufacture a high efficiency "Oumei" brand musical doorbell.

• 在一个书包大小的盒子里，魔术般地隐藏着音乐门铃。

  A musical doorbell is magically concealed inside a box the size of a satchel.