Viber

一款免费网络电话应用;

以上结果来自金山词霸

例句:

1.

Viber, the smartphone app that lets people call and text other users free of charge, hasrecently surpassed 50 million registered users.

提供免费通话及短信服务的智能手机应用viber，注册用户近期已逾五千万。