我还记得那天上课的场景，就像是在梦中一样。老师正讲解着历史上的某个事件，我却突然感觉到了剧烈的疼痛，我的心口仿佛被人捅了一刀。我转头一看，才发现是同学笔尖不小心划破了我的衣服。
那个瞬间，我整个人的世界都在颠覆。 classmates around me were all looking at me with concern, but I was just sitting there, feeling numb. The teacher stopped teaching and came over to check on me. My heart was pounding so fast that I could hardly breathe.
I tried to stand up and walk out of the classroom, but my legs felt like jelly. My mind was racing with thoughts of what could have happened if the situation had been worse. Was it a knife? A sharp object? What if it had pierced deeper?
The teacher helped me to sit down and called for an ambulance. I couldn't believe this was happening in class, in front of everyone. My face turned red from both pain and embarrassment.
After what seemed like an eternity, the paramedics arrived and took me to the hospital for further examination. It turned out that it wasn't as serious as we thought - just a shallow cut on my chest from a broken pen nib.
But that incident left a deep scar on my heart. It made me realize how fragile life can be, how quickly things can go wrong even in the most mundane situations. From then on, I became more cautious in class - always keeping an eye out for any potential dangers lurking around every corner.
Looking back now, I'm grateful that nothing worse happened that day. But the memory still lingers - a painful reminder of how one careless moment can change everything forever.
