中国大学MOOC: A product is regarded as a _________ to a problem.
举一反三
- A product is regarded as a _________ to a problem.
- 中国大学MOOC: They are making a new __________ to solve the problem.
- Think of your problem as a ________then it becomes less of a problem.
- The duality of a dual problem is not necessarily the primal problem. ( ）
- 中国大学MOOC: This problem deserves ____________________.