凯西·莫顿是克拉拉·巴顿儿童中心的老师，他以拍掌为信号，教孩子们改变节目并开始清理场地。
Cathie Morton, a teacher at the Clara Barton Center for Children, leads the kids in a clapping exercise to signal that it is time to shift gears and start cleaning up.
当你发现一个隐患的系统，只要下载二进制文件的清理，设置你的PATH环境变量来使用他们，并开始寻找后门。
When you find a compromised system, simply download the clean binaries, set your PATH environment variable to use them, and start looking for backdoors.
如您所见，开始使用filter _ var函数来清理输入并使其有效并且安全。
As you can see, you begin to use the filter_var function to clean up the input and make it usable and safe.
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