研究 | yán jiū | research / a study / CL:項|项[xiang4] / to research / to look into | |
治 | zhì | to rule / to govern / to manage / to control / to harness (a river) / to treat (a disease) / to wipe out (a pest) / to punish / to research | |
查 | chá | to research / to check / to investigate / to examine / to refer to / to look up (e.g. a word in a dictionary) |