名词
中文翻译：锯齿
同义词：
['chisel', 'saw blade例句：1. The carpenterused a saw bit to cut the wood.（木匠用锯齿切木头。）']
例句：
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1. The carpenterused a saw bit to cut the wood.
木匠用锯齿切木头。
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2. The engineerdesigned a new saw bit for the machine.
工程师为机器设计了一种新的锯齿。
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3.The old saw bit was worn out andneeded to be replaced.
旧的锯齿磨损了，需要更换。