名词
中文翻译：硬钻头
同义词：
['hard drill bit', 'hard drilling']
例句：
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1.He used a hard drill to bore through the concrete.
他用硬钻头在混凝土中钻孔。
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2. The hard drill bit was causing him pain.
硬钻头让他感到疼痛。
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3.Hard drilling is essential for cutting through tough materials.
硬钻是切割难材料所必需的。