They say that just before the derailment happened they heard an adult admonishing their child in the next booth, saying "No, don't do that."
その人によると、脱線事故が怒る直前に、となりの席で大人が子どもに向かって「やめなさい」と注意しているのが聞こえたという。
Optimized studying based on the forgetting curve vastly improves memorization. - What is reminDO?
Memorize