videophone的复数形式怎么拼写？

n.可视电话，电视电话，视像电话...

I will give you a videophone ring tonight.今天晚上我给你打可视电话.The videophone is a telephone equipped for both audio and video transmission.电视电话是指既可以看也可以听的电话.People will be able to use videophone for conferences.人们将会使用电视电话来举行会议....

videophone的音标：videophone的英式发音音标为：['vɪdiəʊfəʊn]videophone的美式发音音标为：['vɪdioʊfoʊn]...