free tango
自由探戈
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The service is still free, but Tango will introduce premium paid features at some point in the future.
现在Tango是免费使用的，但是在将来某个时候，Tango会推出增值收费服务（premium paid features）。
youdao
In September he and cofounder Uri Raz released an app called Tango, which allows you to make video calls for free.
FORBES: Magazine Article
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