大单小双是什么数字

简介：The guard uncle was making a fire on the stove in the security room and reading the newspaper. The paulownia outside the window was wrapped with a layer of winter straw. He was wondering if he should buy a bottle of wine to warm up when the time came. Suddenly he saw a boy through the window. Blinking his eyes, he was startled and said: "It turns out to be Su Can, what are you doing here?"