rooftree
n. 栋梁；屋顶
近义词：ridgepole，ridge，
英英释义
Noun
- a beam laid along the edge where two sloping sides of a roof meet at the top; provides an attachment for the upper ends of rafters
例句
- if as a tree, Im going to be the rooftree; 既然是树，我就要长成栋梁；