名词
中文翻译：长度块
同义词：
['length piece', 'length stripe', 'length bar']
例句：
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1.The carpenter used a length block to mark the wall.
木匠用一个长度块来标记墙壁。
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2. The construction workers had to use length blocks to measure the distance between the supports.
建筑工人不得不使用长度块来测量支座之间的距离。
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3.The engineer used a length block to ensure the beam was straight and level.
工程师用一个长度块来确保梁直且水平。