make sense, make sense of

11. PHRASE(V inflects). If something makes sense, you can understand it.

• He was sitting there saying, `Yes, the figures make sense.'

12. PHRASE(V inflects). When you make sense of something, you succeed in understanding it.

• This is to help her to come to terms with her early upbringing and make sense of past experiences.
  

13. PHRASE(V inflects, oft it PHR to-inf). If a course of action makes sense, it seems sensible.

• It makes sense to look after yourself.
• The project should be re-appraised to see whether it made sound economic sense.

자료: Collins Cobuild, http://eedic.naver.com/eedic.naver?mode=word&id=25501&rd=s