Random color in every circle and every round, which greatly challenge your short-term memory but never bores you.
每一轮，都会产生随机颜色的圆圈，极大地挑战你的短期记忆，但永远不会让你厌烦。
Random color in every circle and every round, which greatly challenge your short-term memory but never bores you.
每一轮，都会产生随机颜色的圆圈，极大地挑战你的短期记忆，但永远不会让你厌烦。
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