心脏病是美国的第一杀手。
结核病是世界第一传染病杀手。
TB is the number-one infectious disease killer in the world.
宋朝第一金牌女杀手，而今穿越现代网游，什么？
The song dynasty first gold medal woman killer, now through modern online, ???????
心脏病是美国第一大健康杀手，如果能培育出人造心脏，将是一项重大的进步。
With heart disease the No. 1 killer in the U. S. , building a human heart will be a major step forward.
撞车是造成美国儿童伤亡的第一大杀手。
Passage 2 S4. Car crashes are the leading cause of injury and death among u.
撞车是造成美国儿童伤亡的第一大杀手。
Passage 2 S4. Car crashes are the leading cause of injury and death among u.
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