名词
中文翻译：直齿
同义词：
['straight tooth', 'straight edge', 'straight pin']
例句：
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1. Thedentist used a straight-toothed file to smooth the enamel.
牙医用一把直齿的锉刀来磨光牙釉质。
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2. The carpenter used a straight-toothed saw to cut the wood.
木匠用一把直齿锯来锯木头。
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3. The engineer used a straight-toothed ruler to measure the dimensions of the building.
工程师用一把直齿尺来测量建筑物的尺寸。