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短语

required element

强调
微软 необходимый элемент (An element that is required to be present in order to satisfy a schema)
花样滑冰 обязательный элемент (physical force is not a required element of a crime of violence. | ... by a Montana law that explicitly barred consideration of intoxication in negating a required element of a crime. The U.S. Supreme Court upheld his conviction. Alexander Demidov)
运动的 обязательный элемент
required element
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