problem

• 指需要关注和解决的情况、人或事物，因其困难或令人不快。

A noun referring to a situation, person, or thing that needs attention and solving because it is difficult or unpleasant.

1. Difficult situationA1formal

   A situation, person, or thing that needs attention because it causes difficulty or trouble.

   难题

   • We have a problem with the printer.
   • She discussed her problems with the counselor.
   • The main problem is lack of time.

   同义词complicationdifficultydilemmahardshipissueobstaclepredicamentquandarytroublevexation

   反义词advantageassetbenefitsolution

2. Mathematical questionA1formal

   A question or exercise in mathematics that requires a solution.

   数学题

   • This math problem is very challenging.
   • Solve the following problems on page 45.
   • The teacher assigned ten problems for homework.

   同义词exercisepuzzlequestiontask

   反义词answersolution

3. Puzzle or challengeA2informal

   Something that is difficult to understand or solve.

   难题或挑战

   • It's a problem to figure out this riddle.
   • The detective faced a complex problem in the case.
   • No problem, I can help you with that.

   同义词challengeconundrumenigmaposerpuzzlequestionriddle

   反义词answerkeysolution