反思

反思	fǎn sī	to think back over sth / to review / to revisit / to rethink / reflection / reassessment
反	fǎn	contrary / in reverse / inside out or upside down / to reverse / to return / to oppose / opposite / against / anti- / to rebel / to use analogy / instead / abbr. for 反切 phonetic system
思	sī	to think / to consider