perturbed hard chain theory

例句：

1. 1. She was perturbed by the news of her friend's accident.
   她因朋友的事故而心烦意乱。
2. 2. The weather forecast causedhim to be perturbed about theimpending storm.
   天气预报使他对即将到来的暴风雨感到不安。
3. 3. He was perturbed by the thought of being alone ina foreign country.
   他一想到在异国他乡一个人就感到不安。