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But e-bikes containing lithium-ion batteries are a newer challenge. "When a battery fails, it doesn't necessarily ignite, it will often produce some off-gases," says Stephen Welch, senior lecturer at the University of Edinburgh's Fire Research Centre. "Those off-gases are toxic and flammable. If they accumulate, you can have an explosion risk."。WPS官方版本下载对此有专业解读
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Thinking Step 4: 推理第三个人。他听到了前两个人的话，推断出前两个人都想要。加上他自己也想要，所以三个条件都满足。