sub-floor

常见例句

• main and sub floor structure system
  主次梁板结构体系
• Don't scrape your feet on the floor.
  别用脚蹭著地板。
• 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，我得代为裁判。
• The book hit the floor with a thud.
  这书砰的一声落在地板上。
• He canted over from his chair onto the floor.
  他从椅子上跌倒在地板上。
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