利他行為

altruistic behavior

sharp / favorable / advantage / benefit / profit / interest / to do good to / to benefit

to benefit others / altruism

he; him (used for either sex when the sex is unknown or unimportant) / (used before sb's name for emphasis) / (used as a meaningless mock object) / (literary) other

row / line / commercial firm / line of business / profession / to rank (first, second etc) among one's siblings (by age) / (in data tables) row / (Tw) column

to walk / to go / to travel / a visit / temporary / makeshift / current / in circulation / to do / to perform / capable / competent / effective / all right / OK! / will do / behavior / conduct / Taiwan pr. [xing4] for the behavior-conduct sense

action / conduct / behavior / activity

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