算术平均值公式简介：Uncle Pan rolled his eyes, held the hot tea cup in his hand, took a sip, and howled with the ginger tea in his mouth. This ginger soup is too hot for the tongue! So hot, so hot.
Uncle Pan rolled his eyes, held the hot tea cup in his hand, took a sip, and howled with the ginger tea in his mouth. This ginger soup is too hot for the tongue! So hot, so hot.
