VOA慢速英语:Why Some Worry About Trump’s Tweets

formally – adv. made or done in an official and usually public way

ballistic missile – n. a weapon that is shot through the sky over a great distance and then falls to the ground and explodes

editor – n. a person whose job is to prepare (something written) to be published or used: an editor can make changes, correct mistakes, etc., in (something written)

frequent – adj.​ happening often

account – n.​ an arrangement in which a person uses the Internet or e-mail services of a particular company​

hack – v. to secretly get access to the files on a computer or network in order to get information or cause damage

fake – adj. not real

stock – n. share of the value of a company which can be bought, sold, or traded as an investment

complain – v.​ to say (something that expresses dislike or unhappiness)​

commitment – n. a promise to do or give something

discourse – n.​ a long talk or piece of writing about a subject​

authenticity – adj. real or genuine

cite – v. to mention (something) especially as an example or to support an idea or opinion​