名词中文翻译
中文翻译：坚硬的围岩同义词
同义词：
['hard rock', 'solid rock']
例句：
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1. Thehard surrounding rock is difficult to drill through.
坚硬的围岩很难钻穿。
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2. Thehard surrounding rock is a challenge for geologists.
坚硬的围岩对地质学家来说是一大挑战。
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3. The hard surrounding rock hasbeen causing problems for years.
坚硬的围岩多年来一直造成问题。