澄清
chéngqīng
I s.v.
clear; transparent
II v.
1) clear up; clarify
你们应该澄清你们之间的误会。 You should clear up the misunderstanding between you.
2) purify water by letting the impurities settle down
3) quell disturbances in the world; put in order; set right
4) purge (the country) of troubling elements