回声定位的计算公式简介：Liu Lei, Junyao, Zhao Shun and others couldn't bear it any longer and burst into laughter. On the crowded bus, other passengers frowned and moved aside. Those who didn't know it thought they were a few lunatics.
Liu Lei, Junyao, Zhao Shun and others couldn't bear it any longer and burst into laughter. On the crowded bus, other passengers frowned and moved aside. Those who didn't know it thought they were a few lunatics.
