In other words, fracture of ceramic balls was a somewhat rare complication overshadowed by the fracture incidence for femoral stems and gross failures with the cemented UHMWPE cups.
换言之，同股骨干断裂发生率和水泥uhmwpe杯的总损坏相比，陶瓷球的断裂是一种少见的并发症。
BCE - the reputed first known performance of a conjuring effect (cups and balls) by the magician Dedi in ancient Egypt.
公元前2700年古埃及的魔术师Dedi表演了杯和球的魔术效果，号称史上第一个魔术表演。
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