一、牙克石网友解答:
1.北美四大职业体育联盟,由NFL(National Football League,美式橄榄球联盟)、MLB(Major League Baseball,美国职业棒球大联盟)、NBA(National Basketball Association,美国职业篮球联赛)和NHL(National Hockey League,国家冰球联盟)组成.
1.北美四大职业体育联盟,由NFL(National Football League,美式橄榄球联盟)、MLB(Major League Baseball,美国职业棒球大联盟)、NBA(National Basketball Association,美国职业篮球联赛)和NHL(National Hockey League,国家冰球联盟)组成.