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."
纳泽几年前就想来中国旅游，但那时，他得提前办签证，手续繁琐不说，还担心“计划赶不上变化”，白忙活一场。
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Why did the committee come to that conclusion?
Официально сезон возгораний стартует 1 марта, но полыхает лес уже сейчас — по последним данным, выгорели 12 тысяч гектаров травы и деревьев.