milk / breast

immature / juvenile / childish / immature person / juvenile person / childish person / amateurish / inexperienced / unprofessional

station; one's post; stationed at / resident / stationary

(informal) those guys, a group, bunch of people

demography

a futile endeavor, a brave but useless attempt

異種格闘技戦: a combat sport match where opponents compete against each other using different styles of martial arts

single transferable vote

steep, high / swift / imperial

step on / tread