常見(jiàn)例句main and sub floor structure system 主次梁板結(jié)搆躰系Don't scrape your feet on the floor. 別用腳蹭著地板。The tables are firmly fixed to the floor. 桌子都牢牢地固定在地板上。I had to sub for the referee, who was sick. 裁判病了,我得代爲(wèi)裁判。The book hit the floor with a thud. 這書(shū)砰的一聲落在地板上。He canted over from his chair onto the floor. 他從椅子上跌倒在地板上。 返回 sub-floor