忧患

例句：

1. 1. I'm worried about the exam results.
   我担心考试的结果。
2. 2. He is always troubled by his financial problems.
   他总是被他的财务问题困扰。
3. 3. The country is plagued by natural disasters.
   这个国家经常遭受自然灾害的困扰。