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【名词】1. 脑卒中；中风；(疾病的)发作 2. (心脏的)跳动；脉搏 3. 一击，一敲 4. 【机械】冲程，行程【1及物动词】1. (用笔)画;勾消 2. (划船比赛中) 划【2及物动词】轻抚


A stroke is the sudden death of brain cells in a localized area due to inadequate blood flow. A stroke occurs when blood flow is interrupted to part of the brain. Without blood to supply oxygen and nutrients and to remove waste products, brain cells quickly begin to die. Depending on the region of the brain affected, a stroke may cause paralysis, speech impairment, loss of memory and reasoning ability, coma, or death. A stroke also is sometimes called a brain attack or a cerebrovascular accident (CVA). Some important stroke statistics include: more than one-half million people in the United States experience a new or recurrent stroke each year stroke is the third leading cause of death in the United States and the leading cause of disability stroke kills about 160,000 Americans each year, or almost one out of three stroke victims three million Americans are currently permanently disabled from stroke in the United States, stroke costs about $30 billion per year in direct costs and loss of productivity two-thirds of strokes occur in people over age 65 but they can occur at any age strokes affect men more often than women, although women are more likely to die from a stroke strokes affect blacks more often than whites, and are more likely to be fatal among blacks

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