Listening practice: The seconds before the shaking arrives
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July 4, 2026 · 7:45 AM
Listening practice: The seconds before the shaking arrives
An English listening episode for senior high students about earthquake early warning, why P waves can trigger alerts before stronger shaking, and why a few seconds can still matter.
节目导览
本期听力围绕 earthquake early warning 展开：地震预警为什么不是预测，P waves 和 S waves 的速度差如何给预警系统争取几秒钟，以及为什么几秒钟仍可能帮助人和机器采取保护动作。
收听建议：第一遍先不要看词汇，抓住 not prediction, but detection 这个核心对比；中间中文提示会解释关键词和长句；最后再完整复听英文原文。
本期关键词
- earthquake early warning：地震早期预警
- P waves / primary waves：初至波或纵波
- S waves / secondary waves：横波
- shaking intensity：晃动强度
- sensor：传感器
- deliver a warning：发送预警
- late alert zone：来不及提前预警的近震源区域
- Drop, Cover, and Hold On：伏地、遮挡、抓牢
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