The French Open is the only major event that doesn't use the video technology because officials can check ball marks left on the clay surface.
法网是唯一不采用录像技术的大满贯赛事，因为裁判可以在土场上检查球印。
The French Open is the only major event that doesn't use the video technology because officials can check ball marks left on the clay surface.
法网是唯一不采用录像技术的大满贯赛事，因为裁判可以在土场上检查球印。
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