Please keep in touch by phone during your stay here. My schedule is kind of unpredictable, so please try a few more times if I'm not in here.
你在这儿逗留期间，请和我保持电话联系。我的时间没有一定，打电话时请多试几次。
One way that system designers try to defeat dictionary attacks is by temporarily disabling an account when a wrong password is submitted more than a few times.
系统设计者尝试阻止词典攻击所使用的一种方法是当错误密码提交超过一定次数时暂时禁用该账号。
Try running this script a few times to see how it works, then we'll examine it in more detail.
尝试运行几次这个脚本，看看它如何运作，然后再对它进行详细考察。
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