為主

to rely mainly on / to attach most importance to

as (in the capacity of) / to take sth as / to act as / to serve as / to behave as / to become / to be / to do / by (in the passive voice)

because of / for / to

owner / master / host / individual or party concerned / God / Lord / main / to indicate or signify / trump card (in card games)

the first impression is the strongest / to hold a preconceived notion (about sth)

lit. the guest acts as host (idiom); fig. to turn from passive to active behavior

behaviorism