acior \ bobysister \ waiter \ barber 这些单词中文怎么解释啊?并且要把这些单词的职业作用用英文说出来?

actor 男演员 a theatrical performer
babysitter 临时保姆 a person engaged to care for children when the parents are not home
waiter 服务员 a person whose occupation is to serve at table (as in a restaurant)
barber 理发师 a hairdresser who cuts hair and shaves beards as a trade