以下为句子列表：
英文: 1984 Scientists reported that an effective chicken pox vaccine had been developed. The disease claimed some 100 to 150 lives in the U.S. each year.
中文: 科学家们报道：已经制成一种有效的水痘疫苗。美国每年约有100人到期150人死于水痘病。
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英文: Chicken pox is a common childhood sickness.
中文: 水痘是一种常见的儿童期疾病。
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