VOA慢速英语:Burned Firefighter Gets Historic Face Transplant

extensive – adj. large in size or amount : very full or complete

transplant – medical : to perform a medical operation in which an organ or other part that has been removed from the body of one person is put it into the body of another person

recipient – n. a person who receives something

plastic surgery – n. surgery that improves or repairs the form or appearance of body parts

critical – adj. extremely important

third-degree – adj. causing severe injury

positive – adj. thinking that a good result will happen : hopeful or optimistic