The UEFA European Championship is a quadrennial men's soccer competition held by the Union of European Football Associations.
答：欧洲杯是由欧足联成员举办的、每四年一次的赛事。
A: the UEFA European Championship is a quadrennial men's soccer competition held by the Union of European Football Associations.
答：欧洲杯是由欧足联成员举办的、每四年一次的赛事。
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