r and noise outside. There are only two of them. Xiao Cheng loosens he Bing, and the two look at each other."I'm sorry.""I'm sorry."two people spoke out at the same time and said the same three words-...轉碼失敗！請您使用右上換源切換源站閱讀或者直接前往源網站進行閱讀！this math problem. It's really difficult." Lu Ying suddenly thought of something, "forget it, this problem is an expansion problem, you should not understand, you'd better do the previous basic proble...