向下移动38x89mm木条,除去多余混凝土。[4]{"smallUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/9\/9c\/Finish-Concrete-Step-6-Version-2.jpg\/v4-460px-Finish-Concrete-Step-6-Version-2.jpg","bigUrl":"https:\/\/www.wikihow.com\/images_en\/thumb\/9\/9c\/Finish-Concrete-Step-6-Version-2.jpg\/v4-760px-Finish-Concrete-Step-6-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":760,"bigHeight":570}2使用可替代工具(可选)。