n. a source of difficulty
n. an event causing distress or pain
n. an effort that is inconvenient
n. an unwanted pregnancy
n. 烦恼, 麻烦, 困难, 动乱, 故障
vt. 困扰, 麻烦, 使烦恼, 折磨
vi. 烦恼, 费心
1. I am having trouble understanding this math problem.
我在理解这个数学问题时遇到了困难。
2. She called me because she was in trouble and needed help.
她给我打电话，因为她遇到了麻烦，需要帮助。
3. Don't worry, we can solve this trouble together.
别担心，我们可以一起解决这个问题。