VOA慢速英语:美国开始从社交媒体搜集移民的信息

handle – n. a nickname

alias – n. another name a person sometimes uses

resident – n. someone who lives in an area for some length of time

monitor – v. to watch, observe or check over something

institution – n. an established organization

commercial – adj. related to the buying and selling of goods and services

practical – adj. relating to what is real rather than what is possible or imagined

implement – v. to begin something or make it active