VOA慢速英语:刚果感染埃博拉病毒的女性比男性多

outbreak – n. a sudden increase in the number of cases of a disease

isolation – n. the state of being in a place or situation that is separate from others

epidemic – n. the sudden spread, growth or development of something such as a disease

guess – v. to predict; to form an opinion about something without much evidence

constant – adj. happening all the time or very often over a period of time