重点讲解：
1. marvel at 惊讶不已；不胜惊羡；大为赞叹；
例句：I marvel at his tremendous achievements.
对他的巨大成就我感到惊叹UPGpt3[y-by1;GwkL。
2. look back 追忆；回顾；
例句：She can look back on her career with great satisfaction.
她回顾自己的经历觉得心满意足RHg*!rBXkH;&。
3. be stressed out 极度焦虑不安的；心力交瘁的；
例句：I'm all stressed out about this new job.
我因这个新工作而感到紧张不安)y!jmB4pH,r。
4. throw up 呕吐；呕出；
例句：This smell is enough to make you throw up.
这种气味令人呕吐eA(;8yP2FrBtfK%。