Learn advanced vocabulary by listening to these 3 stories. Story 1 is about a marathon runner. Story 2 is about helping new coworkers. Story 3 is about starting life as a middle school student. Word list: threat — 威胁 fatigue — 疲劳 span — 持续时间 / 跨度 infectious — 有感染力的 / 传染性的 derived — 源自于 cater to — 迎合 / 满足需求 initially — 起初 authentic — 真实的 / 正宗的 lead to — 导致 expectation — 期望 well into — 一直到…很晚 reply — 回复 doom — 毁灭 / 注定失败 irritable — 易怒的 such as — 例如 drained — 精疲力尽的 apathy — 冷漠 depleted — 耗尽的 inconsistent — 不一致的 pick up on — 察觉 / 理解 alarming — 令人担忧的 insomnia — 失眠 reviews — 评价 / 评论 landmark — 地标 / 里程碑 isolated — 孤立的 / 偏远的