The combo includes 1 divot tool, 1 hat clip and 2 magnetic ball makers, making it the perfect gift for the avid golfer in your life.

该组合包括1草皮工具，一顶帽子剪辑和2磁球制造商，使其成为你生命中狂热的高尔夫爱好者的完美礼物。

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Magnetic levitation, or maglev, holds the ball in place while it spins around, getting clothes cleaner than a circular-spinning drum ever could.

磁力悬浮，或者磁悬浮，使这个旋转的球始终保持在同一位置，比循环滚动机器洗得更干净。

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Ball lightning is often reported during thunderstorms, and it's known that multiple consecutive lightning strikes can create strong magnetic fields.

球状闪电通常是在暴风雨时所报道的，人们知道，许多连续不断的雷击可以产生很强的磁场。

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GoalRef has been developed by German research institute Fraunhofer and involves using magnetic strips inside the ball to detect whether or not it has crossed the goal line.

CNN: FIFA awards goal-line technology licenses

GoalRef uses a microchip implanted in the ball and low magnetic waves around the goal.

CNN: Over the line: Goal tech to be used at 2014 World Cup

GoalRef, meanwhile, uses a magnetic field and a special ball to determine whether a ball has completely crossed the line or not.

CNN: Goal-line technology enters final testing