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roof-tree的英文翻譯是什么意思，詞典釋義與在線(xiàn)翻譯：
英英釋義
名詞 rooftree:
-
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
roof-tree的用法和樣例：
例句
用作名詞 (n.)
- The timber carries the whole weight of the roof.
棟梁支撐屋頂全重。 - 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.
化心旌為樹(shù)，迎接時(shí)代的洗禮，堅毅地站著(zhù)，為人類(lèi)之靈長(cháng)，為民族之棟梁。
