VOA慢速英语:The Many Ways to Say 'Okay'

adverb – n. a word that describes a verb, an adjective, another adverb, or a sentence and that is often used to show time, manner, place, or degree

coworker – n. a person who works at the place where you work : someone you work with

discourse marker – n. a word or words that organize a conversation

conversation – n. oral exchange of sentiments, observations, opinions, or ideas

acknowledge – v. to make known the receipt of; to make known that you have heard another person's statement

transition – n. a movement, development, or evolution from one form, stage, or style to another