形容词
中文翻译:极其坚硬的
同义词:
['extremely hard', 'extremely tough']
例句:
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1. Therock is so hard that it can't be carved with a knife.
这块石头太硬了,不能用刀雕刻。
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2. The metalis extremely hard and will not bend easily.
这种金属非常坚硬,不容易弯曲。
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3. The groundwas extremely hard to walk on.
地面非常坚硬,难以行走。