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小华腰围约6;]:^.x(E2{.P*k3j/A9r*m0s+U/j6Y.n*v:L9y(D8G-X;j({
数学书厚约82O(V+E-k(P1f9r*m0s+U/j6Y.n*v:L9y(D8G-X;j({
教室地面约56(y3@1F)u/@.|9r*m0s+U/j6Y.n*v:L9y(D8G-X;j({