6码两期计划阶梯式倍投法简介：Su Can lowered his head and read English words. Suddenly someone knocked on his desk. When he looked up, he saw someone throwing a note quickly. He reached out and caught it quickly without anyone noticing.
Su Can lowered his head and read English words. Suddenly someone knocked on his desk. When he looked up, he saw someone throwing a note quickly. He reached out and caught it quickly without anyone noticing.
