形容词
中文翻译：直线的
同义词：
['straight', 'vertical', 'perpendicular']
例句：
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1.The road is straight as an arrow.
这条路直得像箭一样。
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2. The building is vertically aligned with the skyscrapers.
这座建筑与高楼大厦垂直排列。
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3. The angle of the roof is perpendicular to the floor.
屋顶的角度与地板垂直。