case: on the case(案件)/in case(万一)/in the case of(关于)
arrest a criminal / commit acrime
Catch a criminal / break a law
Have an alibi(没犯罪) /solve a crime
Make a confession / question a criminal
Powerful computer / strong tea
Extremely happy / highly likely
Dress code / hands of a clock
Lions roar/ mouth waters
Acquire knowledge / make a decision
Escape narrowly/ rain heavily
Watch out for a warning signal
Order somebody about