VOA慢速英语:俄罗斯持不同政见者疑似中毒在德国住院

stable – adj. not likely to change or end suddenly

induce – v. cause a particular condition

coma – n. the state of being unconscious for a long time

unfortunately – adv. used to say that you wish something was not true or that something had not happened

harass – v. to continue to annoy or upset someone over a period of time

allergic – adj. having an allergy - a medical condition in which your body reacts badly to something that you eat, breathe or touch