紧急警告系统（Emergency Warning System，简称EWS），日本通过广播电视发布紧急信息的系统，其目的是将灾害预警信息及时发送给公众，提高灾害预警信息播报的及时性，降低灾害影响。
日本自1985年即开始建设紧急警告系统(emergency warning system,EWS),广播和电视等接收终端采用调频多工高速数据广播系统(data audioradio channe1,...
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科学家们警告说紧急冷却系统可能失灵，核反应堆的堆芯熔毁可能会发生。
Scientists warned that emergency cooling systems could fail and a reactor meltdown could occur.
可以将严重性标记为信息（纯信息）、警告、错误、重要（需要解决的严重问题）甚至紧急（系统需要紧急帮助）。
The severity can be marked as info (purely for information), warning, error, critical (a serious problem that needs addressing), and even emergency (the system needs urgent help).
清单10中的脚本用来监视磁盘空间，您可以设置警告(warninglimit)和紧急情况(lowlimit)限制，以及进行检查的文件系统的列表。
The script in Listing 10 monitors disk space, and you can set the warning (warninglimit) and emergency (lowlimit) limits, as well as the list of file systems that are checked.
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