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这是一个低成本版的手机或电话会议。
It is a low-cost version of a phone or conference calling.
youdao
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我们用手机联络，打电话或发短信。
We use our cell phones to touch base, either by calls or text messages.
youdao
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我们用手机联络，打电话或发短信。
We use our cell phones to touch base, either by calls or text messages.
youdao