VOA慢速英语:Health Agreement Asks Chinese People to Help Strangers

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

bystander – n. a person who is standing near but not taking part in what is happening

cardiac arrest – n. medical temporary or permanent stopping of the heartbeat

compression – n. the act, process, or result of pressing something together or pressing on something

went viral – expression becoming very popular by circulating quickly from person to person, especially through the Internet