VOA慢速英语:Bulgarians Biking From Alaska to Argentina

journey – n. an act of traveling from one place to another; trip

aware – adj. knowing that something (such as a situation, condition, or problem) exists

preserve – v. to keep (something) in its original state or in good condition

consumerism – n. the actions of people who spend a lot of money on goods and services

approach – n. a way of dealing with something: a way of doing or thinking about something

conversation – n. an informal talk involving two people or a small group of people: the act of talking in an informal way

trash – n. things that are no longer useful or wanted and that have been thrown away

log on – phrasal verb to start the connection of a computer to a network or system

host – n. a person who is entertaining guests socially or as a job