基本解释n.棟梁；屋頂同根派生 rooftree相关词英汉例句if as a tree, Im going to be the rooftree; 既然是樹，我就要長成棟梁；rooftree更多例句词组短语短語housetop roof rooftop rooftree 屋頂rooftree更多词组英英字典柯林斯英英字典 &rarranother name for ridgepole rooftree剑桥字典rooftree柯林斯字典专业释义土木建築工程椽木架子