n. a state of difficulty that needs to be resolved
n. a question raised for consideration or solution
n. 问题, 难题
a. 成问题的, 难处理的
1. I have a problem with my computer; it won't turn on.
我的电脑有个问题,它无法开机。
2. Can you help me solve this math problem?
你能帮我解决这个数学问题吗?
3. The main problem is that we don't have enough time.
主要问题是我们没有足够的时间。