mobile phone的复数形式怎么拼写？

The mobile phone business was actually his bread and butter.移动电话业务实际上是他的主业。The mobile phone is now a must-have for children.手机现在已经成了孩子们的必备品。My mobile phone is extremely useful.我的手机非常有用。...

移动电话...

mobile phone的音标：mobile phone的英式发音音标为：['məubail fəun]mobile phone的美式发音音标为：[mo'bil fon]...