ANSIC 标准向 scanf() 增加了一种新特性，称为扫描集(scanset)。扫描集定义一个字符集合，可由 scanf() 读入其中允许的字符并赋给对应字符数组。扫描集合由一对方括号中的一串字符定义，左方括号前必须缀以百分号。
加载文件集的文件扫描保了留原始的数据槽文件名，因为并不需要按照特定顺序处理文件。
The load file set file scan retain the original slot file names, since it is not required to have a specific order for processing.
存放数据集的服务能够针对这些入站链接扫描网络，如果需要的话，就返回给用户。
The service that hosts the dataset could scan the web for these inbound links and, if desired, reflect them back to its users.
整整三个星期，儿科医生和神经外科医生都集对女儿的头部进行检查，并通过CT扫描查看是否有颅内出血。
For three weeks, pediatricians and neurosurgeons focused on her head, taking CT scans to see whether she had bleeding there.
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