计划准确率的定义简介：He vaguely realized that Li Yan's stubbornness might be related to his brother's death. Li Yan felt sorry for his brother and was unwilling to live alone when his brother died for him.
He vaguely realized that Li Yan's stubbornness might be related to his brother's death. Li Yan felt sorry for his brother and was unwilling to live alone when his brother died for him.
