轨迹球 Traditional 軌跡球 guǐ jì qiú 🔊 trackball (computing) + Review this word Meanings guǐ jì qiú 軌跡球 trackball (computing) Its characters 轨guǐrail; track; course; path迹jìtrace; mark; vestige; clue球qiúballHSK 2