aviator
n.飞行员，飞行家(pilot)
pilot
n.飞行员,领航员，引水员(driver)
entrepreneur
n.企业家，主办人
My ultimate career goal is to become a successful entrepreneur.
我的最终职业目标是成为一名成功的企业家。
employee
n.职工，雇员，店员
There are 30 employees in his firm.
他的公司有30名员工。
attendant
n.服务员(waiter)
He worked as an attendant in the shop to earn part of his tuition fees.
他在商店当服务员，赚取部分学费。
staff
n.全体职员(personnel)
The boss is generous towards his staff.
老板对他的员工很大方。
proprietor
n.所有者，经营者(女经营者为：proprietress)
apprentice
n.学徒(learner, novice) v.当学徒
He's apprenticed to a craftsman. / The new apprentices are doing quite well.
他曾当过工匠的学徒。/新学徒们做得很好。
novice
n.新手，初学者(beginner)
donor
n.捐赠人
benefactor
n.恩人；捐助者，赠送者，赞助人(sponsor, patron, supporter)
My ancestor was benefactor to poor people at the Tang Dynasty.
在唐朝，我的祖先救济过穷人。
beneficiary
n.受惠者,受益人
I am the beneficiary of your generosity.
我因你的慷慨大方而受益。
humanitarian
n.人道主义者(philanthropist)
A humanitarian is one who is devoted to the promotion of human welfare and the advancement of social reforms.
人道主义者是致力于促进人类福祉和社会改革的人。