roof-tree

基本解释

• n.栋梁；屋脊大梁

同根派生

英汉例句

用作名词 (n.)

• The timber carries the whole weight of the roof.
  栋梁支撑屋顶全重。
• Turning my fluttering heart into a tree, let it stand firmly to welcome the baptism of time, being the paragon of mankind and the pillar of the nation.
  化心旌为树，迎接时代的洗礼，坚毅地站着，为人类之灵长，为民族之栋梁。