scientists are working on programs to predict where and when an earthquake will occur
科学家们正在研究预测地震发生的地点和时间的程序
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Scientists are working on programs to predict where and when an earthquake will occur. They hope to develop an early warning system that can be used to forecast earthquakes so that lives can be saved.
科学家们正致力于研究预报何时何地会发生地震的计划，他们希望开发一种早期报警系统用来预报地震，以挽救人们的生命。
Scientists are working on programs to predict where and when an earthquake will occur. They hope to develop an early warning system that can be used to forecast earthquakes so that lives can be saved.
科学家们正在对预报地震在何时何地发生进行研究，他们希望开发一套早期报警系统来预报地震、这样使人们的生命免受损失。
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