... When earthquake happens (当地震发生) And you are in the school (你正好在学校) Follow the teacher’s instruction (听从老师的指示) ...
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When earthquake happens more frequent 当地震发生更加频繁
When earthquake happens, first, you should keep calm.
地震发生时，首先，你应该保持冷静。
The utility model involves an auto-close valve when earthquake happens.
一种自动地震煤气关闭阀门。
A city's ability to stay security when earthquake happens is named as the ability for earthquake disaster prevention.
一个城市或地区能确保其地震安全的能力被称之为城市防震减灾能力。
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