挑战

随着美国职业棒球大联盟（MLB）本赛季引入自动好坏球（ABS）挑战系统——允许球队每场比赛对好坏球判罚进行两次挑战，并使用个性化好球带——球员和教练们正以谨慎的态度应对。在前62场比赛中，各队共发起了227次挑战（平均每场3.7次），早期的成功、失误和复盘反映出该系统仍处于学习曲线阶段。

February 01, 2026 由 AI 报道

A viral challenge involves trapping people in a carved-out ice bowl, testing their ability to climb out on a highly slippery surface. An article explains three physics-based methods using frictional forces to overcome the slope. The bowl's spherical shape makes escape increasingly difficult as one ascends.