v. make plain and comprehensible
v. define
v. 解释, 说明
1. Can you explain how to solve this math problem?
你能解释一下如何解这个数学题吗?
2. The teacher will explain the new lesson tomorrow.
老师明天会解释新课程。
3. I need you to explain your reasons for this decision.
我需要你解释一下你做这个决定的理由。