因此，数字电视转换后一到两周，要使用机顶盒屏幕菜单定期扫描新的数字电视台。

So, for the first week or two after the switchover use the converter box's on-screen menu periodically to scan for new digital stations.

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主要思路是客户将消息发送到服务器，接收收者定期扫描服务器，获取消息。

The main idea is the customer sends a message to the server periodically scans the server receives the recipient to get the message.

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在接下来的十年中，研究者们会定期扫描受测者的大脑体积，同时也会要求他们参加心理测试。

Scans to measure brain volume were carried out over the next ten years and mental tests were also run on participants.

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