越南难民克服过去的困境成为一名牙医

nail – n. the hard covering at the end of a finger or toe : a fingernail or toenail

determination - n. a quality that makes you continue trying to do or achieve something that is difficult

opportunity – n. an amount of time or a situation in which something can be done

proud – adj. very happy and pleased because of something you have done, something you own, someone you know or are related: feeling pride

assimilate – v. to adopt the ways of another culture: to fully become part of a different society, country

graduate – v. to earn a degree or diploma from a school, college, or university

customer – n. someone who buys goods or services from a business – n. the activity of making, buying, or selling goods or providing services in exchange for money

prefer – v. to like (someone or something) better than someone or something else

moment – n. a very short period of time

reward – n. money or another kind of payment that is given or received for something that has been done or that is offered for something that might be done