Read the passage below and summarize it using one sentence. Type your response in the box at the bottom of the screen. You have 10 minutes to finish this task. Your response will be judged on the quality of your writing and on how well your response presents the key points in the passage.
阅读下面的文章，用一个句子总结它，把你的回答打在屏幕下方的输入框里。限时 10 分钟。评分依据是你的写作质量，以及回答对文章要点的呈现程度。
About volcano eruption with data included, such 49%, 52%,... It takes many events to predict eruptions of volcano. And a single event is not enough. Demo can help predict that. Though, each volcano is different from one another, and thus it depends on its own reliability. Some eruptions occur without previous signals. With an example of eruption, predictions require long-term research on volcanos. Residents near volcanos can offer their discoveries to scientists.
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